This might seem a silly question to you all Math experts.

I am having problem understanding the logic here. I understood the process of multiplying decimals using grid.

Here's the question:

The distance from Charlene's house to her school is 0.8 miles. Charlene rides her bike 7 tenth of the distance and walks the rest of the way. How far does Charlene ride her bike to school?

Underneath the question it says 0.7 x 0.8 =

They model the two decimals and multiplied.

My question is - isn't the answer given in the question? 7 tenth = 0.7 is the distance she rode her bike. I do not get the logic. Help

Thanks,

wanttolearn