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.
104) After measuring 120 meters of a rope, it was discovered that the metre rod was 3 cm longer. The true length of the rope measured is
Answer is:
123m 60 cm
Explanation:
Related RRB JE Mechanical Question Paper 2014 (Set-1) with Answer Key
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
Answer is:
10 years
Explanation:
Let C's age be x years. Then, B's age = 2x years. A's age = (2x + 2) years.
∴ (2x + 2) + 2x + x = 27
⇒ 5x = 25
⇒ x = 5.
Hence, B's age = 2x = 10 years.