Question

Snorkel and two friends rented three life jackets and a sailboat. The life jackets were $3 each and the boat was $12 an hour. The total cost was $93. For how many hours did they rent the sailboat?

(I need an equation along with the answer.)

Answer 1

3 life jackets @ $3.00= $9.00
1 sailboat @ $12.00/hr
Total cost = $93.00
93-9= 84
84/12= 7
7 hours

Answer 2

The equation is hr= (TC-Pxj*x)/Pxs

They rent the sailboat for 7 hours

Explanation:

We have to get the total cost, that will be the price of the jackets multiple by the quantity of person + the price of the rent of the sailboat multiple by the quantity of hour.

The equation will be:

Total cost= price of the jackets* the quantity of person + the price of the rent of the sailboat * the quantity of hour.

Price of the jackets=Pxj = $3

The quantity of person= x= 3

The price of the rent of the sailboat= Pxs=$12

The quantity of hour= hr=?

TC=Pxj*x +Pxs*hr

hr= (TC-Pxj*x)/Pxs

hr= (93-$3*3)/$12

hr= ($93-$9)/$12

hr= ($84)/$12= 7 hr