Question

While riding her bike, Susan burns 450 calories every ½ hour. Based on this

rate, how many calories will Susan burn if she rides the bike for 1¾?​

Answer 1

1575 calories

Explanation:

Every
`(1)/(2)` an hour while riding her bike, Susan burns 450 calories.

If the rate remains constant then within one hour riding her bike Susan will burn ( 450 × 2 ) = 900 calories.

Now, it is asked to calculate the number of calories that Susan burns in
`1(3)/(4)` hours bike riding.

Here,
`1(3)/(4) = (7)/(4)` hours

Therefore, in
`(7)/(4)` hours she will burn
`(900* 7)/(4) = 1575` calories. (Answer)