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ritesh

· started a discussion

· 1 Months ago

q.no.59 (Question: 108628.0 )

sir speed increased by 50 percent ok but how to calculate time reduce percentage

Question:
The speed of a car during the second hour of its journey is three times that in the first hour. The speed during the third hour is the average of the speeds in the first two hours. If the car had travelled at the second hour’s speed during all three hours, it would have covered 150 km more than it did originally. Find the percentage reduction in time taken to cover the same distance as originally covered, if the car had travelled at the second hour's speed throughout.
Options:
A) 33 \(\cfrac{1}{3}\) %
B) 40%
C) 25%
D) 50%
E) 60%
Solution:

Ans: (a)      

Knowledge Expert

· commented

· 1 Months ago

Step 1: Divide the New Value by the Old Value (you will get a decimal number)

Step 2: Convert that to a percentage (by multiplying by 100 and adding a "%" sign)

Step 3: Subtract that from 100%
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