A banana costs three times as much as an apple. The total cost of 1 banana and 1 apple is $1.60. If a represents the cost of 1 apple, which equation could you use to find a?
We know that the cost of an apple and a banana equals $1.60 a + b = 1.60 We also know that the cost of a banana is 3 times that of an apple 3a = b If we divide 4 from 1.60 we will get the price of 1 apple 4a = 1.60 1 apple costs $0.40 So that means 1 banana costs $1.20
