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labwork [276]
3 years ago
7

Pl help is for homwork

Mathematics
1 answer:
HACTEHA [7]3 years ago
3 0

Answer:

Sabrina bought 3 pounds of bananas.

Step-by-step 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

\frac{0.15b}{0.15}=\frac{0.45}{0.15}\\b = 3

Hence,

Sabrina bought 3 pounds of bananas.

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