Q42
In a 400 metre race, A runs at a speed of 16 m/sec. If A gives B a start of 15 metres and still beats him by 10 sec, then what is the speed of B?
A.
11 m/sec
AnswerB.
10 m/sec
C.
13 m/sec
D.
9 m/sec
Answer: Option A
Solution
Answer: Option A
Solution:
\begin{array}{*{20}{c}}
{}&{\text{A}}&{\text{B}} \\
{{\text{Distance}} \to }&{400}&{385}
\end{array}