Answer: Emma's phone is now worth 480 $, which is a 160 $ decrease.
Sophie's phone is now worth 480 $, which is a 160 $ decrease.
Explanation:
Emma's original phone cost: 560 $
Sophie's original phone cost: 640 $
560 to 7:6
560/1 = 7/6
Cross multiply. We get 7 = 560 x 6
Divide by 7 on both sides
Emma's phone is now worth 480 $, which is a 160 $ decrease.
640 to 4:3
640/1 = 4/3
Cross multiply. We get 4 =640 x 3
Divide by 4 on both sides
Sophie's phone is now worth 480 $, which is a 160 $ decrease.
There is no difference in the new price of both the phones, but a larger decrease in Sophie's original phone cost.