Question

Pl help is for homwork

Answer 1

Sabrina bought 3 pounds of bananas.

Explanation:

Given equations are:

a + b = 8 Eqn 1

0.95a + 1.10b = 8.05 Eqn 2

As we have to find the number of pounds of bananas bought, we will eliminate the variable a from the equation.

Multiplying Eqn 1 by 0.95

0.95(a+b=8)

0.95a+0.95b=7.60 Eqn 3

Subtracting Eqn 3 from Eqn 2

(0.95a+1.10b)-(0.95a+0.95b)=8.05-7.60

0.95a+1.10b-0.95a-0.95b=0.45

0.15b = 0.45

Dividing both sides by 0.15

`(0.15b)/(0.15)=(0.45)/(0.15)\\b = 3`

Hence,

Sabrina bought 3 pounds of bananas.