Question
A and B start from the same place, in the same direction and at the same time with speeds $6$ km/h and $2$ m/sec respectively. After $5$ hours who will be ahead and by how much?
✓
Answer
$\text { A's speed }=6 km / h $
$\text { B's speed }=2 m / sec $
$\text { Distance covered by A in } 5 \text { hours }=6 \times 5=30 km $
$\text { and distance covered by B in } 5 \text { hours }=5 \times 60 \times 60 \times 2 m =36000 m $
$=\frac{36000}{1000}=36 km$
B will be ahead and $36-30=6 km$ ahead.
$\text { B's speed }=2 m / sec $
$\text { Distance covered by A in } 5 \text { hours }=6 \times 5=30 km $
$\text { and distance covered by B in } 5 \text { hours }=5 \times 60 \times 60 \times 2 m =36000 m $
$=\frac{36000}{1000}=36 km$
B will be ahead and $36-30=6 km$ ahead.
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