Question

7 apples and 11 bananas cost $1.47. how much do 2 apples and a banana cost?

Answer 1

Answer: $0.27

Explanation:

7a + 11b = 1.47

7a = 1.47 - 11b

`a=(1.47-11b)/(7)`

Make a table. Choose values for b starting at $0.01 and solve for "a".

The value of "a" must terminate at the hundredths place since we are working with money.

You will discover that a = 0.10 and b = 0.07

The cost of 2 apples and 1 banana is:

2a + b

= 2(0.10) + (0.07)

= 0.20 + 0.07

= 0.27