Question 966251
Mrs. Kelly bought some fruit at 90 cents per pound. If the price has been 15 cents less per pound, she would have been able to buy 4 more pounds with the same amount of money. How much money did she spend?Math smarter than a 5th grader worksheet.
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let x=dollars  Mrs Kelly spent
{{{x/(.90-.15)-x/.90=4}}}
{{{x/.75-x/.90=4}}}
.90x-.75x=.75*.90*4
.15x=2.70
x=18
check:
18/.90=20 (number of apples bought at 90ç/lb)
18/.75=24(number of apples bought at 75ç/lb)