Question

If a group travelled at `70` miles per hour (mph) for three hours and then `60` mph for five hours along a highway, how many miles they travelled?

Answer 1

`510` miles along the highway

Explanation:

`70` mph for `3` hours means they have traveled `210` miles, plus the added `300` miles from `60` mph for `5` hours. so `7 xx 3 = 21` add the zero. `5 xx 6= 30` add the zeros. Now add them together `210+300=510` miles.