103) was asked to find answer by dividing a number by 3. But instead of dividing it, he multiplied it by 3 and got 29.7. What was the correct answer?
Answer is:
3.3
Related RRB JE Mechanical Question Paper 2014 (Set-1) with Answer Key
Answer is:
123m 60 cm
Explanation:
Given Data,
The length of the rod = 3 cm
To measure 120 m , Rod is apply by 120 times .
Therefore, total length that is measure by longer part = 120 x 3
= 360 cm = 3.60 m (∵ 100cm = 1m)
Then, the actual length of rope = 120m + 3.6m
= 123 m 60 cm
Hence, the answer is 123 m 60 cm.
Answer is:
15 years
Explanation:
Increase in sum of age during 3 years = 3 x 5 years
= 15 years
So , the difference between ages of old and new member is 15 years
Answer is:
125
Explanation:
x = 4y
So
4y×y=2500
4y^2=2500
y^2=(2500/4)=625
y=(square root of 625)=25
Thus x is (25×4)=100
Hence
x + y = (100 + 25) = 125