Question

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

Answer 1

Answer:

1575 calories

Step-by-step explanation:

Every $\frac{1}{2}$ 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 $1\dfrac{3}{4}$ hours bike riding.

Here, $1\dfrac{3}{4} = \dfrac{7}{4}$ hours

Therefore, in $\dfrac{7}{4}$ hours she will burn $\dfrac{900\times 7}{4} = 1575$ calories. (Answer)