01/10/2018 1:04 pm
Ratio - proportion, Time and work
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The cost of an article (which is composed of raw materials and wages) was 3 times the value of the raw materials used. The cost of raw materials oncreased in the ratio 3:7 and wages increased in the ratio 4:9 . Find the present cost of article if its original cost was 18
a 41
b 30
c 40
d 46
TG Team 01/10/2018 6:33 pm
Original Cost : 18
Cost of raw material used : 1/3 of 18 = 6
so , raw material : wages = 6 : 12
Cost of raw material increasesd by 3 : 7 so
New cost of raw material : 6/3 x 7 = 14
Wages increased by 4 : 9 so
increased wages : 12/4 x 9 = 27
Present cost : 14 + 27 = 41
Option (A)
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02/10/2018 4:02 pm
In a village 'X' , the ratio of male to female population is 1:3 , whereas in another village 'Y' , the ratio of male to female population is 4:5 . If the ratio of male population to the female population of both the villages taken together is 2:3 , then find the ratio of males in village X to males in village Y.
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09/10/2018 1:32 am
Sir, please help
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23/10/2018 3:37 pm
The reducion in the speed of engine from its original speed is directly proportional to square of the number of bogeys attached to it. The speed of the train is 120 km/hr when there are 4 bogies attached to it. And 60km/hr when there are 6 bogies. What is the maximum numver of bogies that can be attached to train so that it can move?
TG Team 23/10/2018 3:47 pm
S – Kn2
at n = 4 , S – K42 = 120 … (1)
at n = 6 , S – K62 = 60 … (2)
From (1) and (2)
S = 168 and K = 3.
So 168 - 3n2 Should be greater than 0.
168 - 3n2 > 0
168 > 3n2
Maximum possible n => 7.
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31/10/2018 2:29 am
can you explain me what the question intends to say?
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20/11/2018 9:54 pm
A stall sells popcorn and chips in packets of 3sizes: large,super and jumbo. The no. Of largd,super and jumbo packets in its stock are in ratio 7:17:16 for popcorn and 6:15:14 for chips. If total no. Of popcorn packets is same as that lf chips packets , then the number of jumbo popcorn packets aand jumbo chips packets are in ratio?
A 1:1
B 8:7
C 4:3
D 6:5
aniket prajapati 20/11/2018 10:11 pm
let large ,super, jumbo popcorn be 7x, 17x, 16x respectively
and large,super, jumbo chips be 6y, 15y, 14y
total popcorn =7x+17x+16x=40x
toal chips =6y+15y+14y=35y
since they are equal therfore 40x=35y
x/y=7/8
no. of jumbo popcorn= 16*7 , no. of jumbo chips=14*8
ratio= 16*7/14*8=1:1
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20/11/2018 11:07 pm
aniket prajapati 21/11/2018 10:06 am
This post was modified 6 years ago by aniket prajapati
3/4= k(4/5)
Where k is rate of change
K= 15/16
4/5= K×R
WHERE R Is new ratio
Putting value of k
R= 64:75 ( answer)
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22/11/2018 5:21 pm
sol. Please
aniket prajapati 23/11/2018 4:15 pm
Let reduction=R and no. Of bogies be n
R=k×n^2
60= k×36
K= 5/3
Now
120= 5/3× N^2
N=√72
N=8.5
So max no. Of bogies it can carry is 8
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31/05/2019 1:54 pm
akbar and birbal started a business with some investments. Akbar as a working partner received 40% of the annual profit as salary and the remaining was equally divided among akbar and birbal. If the entire profit was divided among akbar and birbal in the ratio of their investments, akbar would have received Rs900 less than what he actually got. Birbal got a profit share of Rs 2100. If birbal's investment is Rs 45000, Akbar's investment is (in rupees). ?
Gaurav Jain 01/06/2019 11:33 am
let's say total profit is 100x
after akbar gets 40x, remaining 60x is divided equally
hence akbar = 30x + 40x = 70x
and birbal =30x = 2100
x = 70
let's say ratio of investment is k:1
hence akbar would have got (k/k+1)*100x = 70x-900
(k/k+1) = (70*70-900)/7000 =4/7
hence k = 4/3
hence ratio of investment is 4:3
hence investment by Akbar = 60000
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31/05/2019 2:38 pm
the ratio of Kumar's and abhishek's income is 4:5 and that of their expenditure is 2:3. If kumar saves 1/3rd of his income, find the ratio of their savings.
Gaurav Jain 01/06/2019 11:27 am
kumar saves 1/3rd means spends 2/3 of his income
let's say incomes are 1200 and 1500
kumar spends 1200*2/3 = 800
ratio of spending is 2:3, hence abhishek spends 1200
hence abhishek saves
1500-1200 = 300
so their savings are 400 and 300
ration is 4:3
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05/07/2019 4:16 am
The ratio of the ages of Ram and Mohan 12 years ago was 2:3 and the ratio of the ages of Mohan and Sohan 12 years from now will also be 2: 3. If the average age of Ram and Sohan at present is 57 years, the ratio of the ages of Mohan Sohan was/will be 1: 2
A. 6 years ago
B. 12 years ago
C. 18 years ago
D. 6 years from now
E. 18 years from now
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12/07/2019 3:23 pm
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25/04/2024 5:37 pm
Seats for Mathematics, Physics and Biology in a school are in the ratio 5 : 7 : 8. There is a proposal to increase these seats by 40%, 50% and 75% respectively. What will be the ratio of increased seats?
- 2 : 3 : 4
- 6 : 7 : 8
- 6 : 8 : 9
- None of these
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18/05/2024 2:35 pm
The ratio of income of A and B last year was 4 : 3, respectively. The ratios of their individual incomes of the last year and the present year are 3: 4 and 5: 6, respectively. If their total income for the present year is Rs. 8.04 lakh, then the income of B last year was :
(a) Rs. 2.7 lakh (b) Rs. 3.6 lakh (c) Rs. 2.4 lakh (d) Rs. 2.8 lakh
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08/08/2024 6:17 pm
The electricity bill charged has two components- a fixed charge and a variable charge that directly depends on the number of watts consumed. In a particular month a bill amounting to Rs 500 was charged for consumption of 125 watts. If the ratio of the amount charged for 400 watts to that of 500 watts is 21:25. Then how much is the fixed charge per month?
- a) Rs 125
- b) Rs 200
- c) Rs 250
- d) Rs 500
