You have a battery that is charged during the day by a solar panel. At night, 3 Iphones use that battery and deplete the charge after 4.8 hours. Your family shows up and they have brought 9 of their own Iphones. How many hours before the charge on the battery is depleted now?
Choose the correct answer:	A) 5.3	B) 1.2	C) 1.8	D) 2.2	E) 1.5
First set up a ratio with all the relevant values and also the unknown variable:   3*4.8 = 12*x   Now solve by multiplying 3 by 4.8 and then dividing that product by 12:    3*4.8= 
<gadget id="calculator"> 3*4.8</gadget>
<output>14.4</output>
14.4   14.4/12= x   x = 1.2   The value of x equals the number of hours the battery charge will last if 12 Iphones are connected to it.   Answer: 1.2
<result>B</result>
You have a battery that is charged during the day by a solar panel. At night, 3 Iphones use that battery and deplete the charge after 4.8 hours. Your family shows up and they have brought 9 of their own Iphones. How many hours before the charge on the battery is depleted now?