7.Answer=8hours
If she spends 25% of her free time on the internet. And she spends 2 hours on the internet, then we can infer the 2 hours is 25% of her free time. To find out her total amount of free time each day the following equation can be made (remember that 25% is the same as 25/100)...
25 2hours
____ =________
100 x hours
cross multiply
25x=200
divide both sides by 25
x=8 hours
8.Answer=132 calories
If 60% of the 220 calories are carbohydrates, the following equation can be made (remember that 60% is the same as 60/100)...
60 x
_____= ___
100 220
Cross multiply
100x=13200
divide both sides by 100
x=132 calories are from carbohydrates
