Question

Martha spent $2.90 on 3½ pounds of bananas. How
much did she spend on each pound of bananas?

Answer 1

Explanation:

this is the price for 3 1/2 pounds of bananas.

to get the price for 1 pound we need to divide it by 3 1/2.

formally we do that by first converting both arguments (3 1/2 and 2.90) into full fractions :

3 1/2 = (3×2 + 1)/2 = 7/2

2.9 = 29/10

so, we have to do

29/10 / 7/2 = 29/10 × 2/7 = (29×2) / (10×7) =

= 29 / (5×7) = 29/35 =

= 0.828571429... ≈ $0.83

she spent about $0.83 on each pound of bananas.

Answer 2

$0.83 a pound of bananas

Explanation:

There are 3.5 pounds of banana, and $2.90 needs to be split between each pound equally.

2.90/3.5 = 0.82857142857, which when simplified means .83.

Check:

3*.83 = 2.49

.82857142857142857/2 = 0.41428571428, aka 0.41.

added together, 2.49+.41 = 2.90

if you want to solve problems like this in the future, just divide the cost over amount (cost/amount) lol