donna buys apples at .35 cents each. She eats 2 apples and sells the rest for .45 cents. She make $4.40. How many apples did she have?

Question

Donna buys apples at .35 cents each. She eats 2 apples and sells the rest for .45 cents each. She make $4.40. How many apples did she have?

since the 2 apples she eats is not part of the profit she makes, the equation becomes:

$4.40 + .35a+$0.70= .45a-$0.70

the $0.70 cancels out & you have

$4.4 + .35a=.45a

$4.4=.45a-.35a

$4.4=.1a

$4.4/.1=a

44+2=a

a=46

Answer 1

a represents the number of apples at the start

She paid 0.35a for the apples

She sells a - 2 @ 0.45, or 0.45(a - 2)

Her profit, 4.40, is sales minus cost

4.40 = 0.45(a - 2) - 0.35a

 

Can you solve for a?