Question

Chris and Goffy ran from Newton to Boston at 15 km/h and 12 km/h respectively. They both started from Newton at 10:00 a.m. If Goffy reached Boston at 10:30 a.m., at what time did Chris reach Boston ?

Answer 1

Answer: Chris reached Boston at 10:24 a.m.

Explanation:

Since we have given that

Speed at which Chris ran from Newton to Boston = 15 km/h

Speed at which Goffy ran from Newton to Boston = 12 km/h

Time at which both started = 10:00 a.m.

Time at which Goffy reached Boston = 10:30 a.m.

That means Goffy takes half an hour to reach Boston,

so, Distance between Newton and Boston is given by

$Speed \times Time\\\\=12\times \frac{1}{2}=6 \ km$

So, Time taken by Chris to ran from Newton and Boston is given by

$Time=\frac{Distance}{Speed}=\frac{6}{15}=\frac{2}{5}\times 60\ minutes=24\ minutes$

So, Chris reached Boston at 10:24 a.m.

Answer 2

The Answer is 10:24 am because...

Chris=15km per hour

Goffy=12km per hour

So Goffy took 30 minutes Boston=6km from Newton. So Chris took 24 minutes and he got to Boston at 10:24 am

Hope this Helps you!      :)