Two water tanks contain 250 and 400 litres of water res
![Two water tanks contain 250 and 400 litres of water res](/img/relate-questions.png)
| Two water tanks contain 250 and 400 litres of water respectively. What will be the maximum capacity of a bucket that can exactly measure the water in the two tanks?
A. 80 litres
B. 40 litres
C. 20 litres
D. 50 litres
Please scroll down to see the correct answer and solution guide.
Right Answer is: D
SOLUTION
To find the maximum capacity of a bucket that can exactly measure the water in the two tanks, we have to find the HCF of 250 and 400.
Using prime factorisation method,
5250550510221
250= 5×5×5×2
54005802162824221
400= 5×5×2×2×2×2
So,
250= 5×5×5×2
400= 5×5×2×2×2×2
HCF of 250 and 400=5×5×2=50
Therefore, a 50 litre bucket has to be used to measure 250 and 400 litres of water exactly.
Note:
To measure 250 l we measure 5 times as 50 x 5 = 250
To measure 400 l we measure 8 times as 50 x 8 = 400