Question

Juan bought a box of laundry soap that weighed 15.6 pounds. One 0.15-pound scoop of soap is enough to wash a regular load of laundry, but 2 scoops are needed to wash heavy work clothes. How many pounds of soap are left after Juan washes 8 regular loads and 5 heavy loads of laundry?

Answer 1

Quantity of soap left after Juan washes 8 regular loads and 5 heavy loads of laundry
`=12.9` pounds.

Explanation:

Number of scoop of soap used to wash a regular load of laundry = One 0.15 pound scoop

Number of scoops of soap used to wash heavy work clothes = Two 0.15 pound scoops

As Juan washes 8 regular loads and 5 heavy loads of laundry,

Total quantity of soap used =
`8(0.15)+5(2)(0.15)=1.2+1.5=2.7` pounds

As a box of laundry soap weighed 15.6 pounds,

quantity of soap left after Juan washes 8 regular loads and 5 heavy loads of laundry
`=15.6-2.7=12.9` pounds.