apples oranges and pears

Question

In a grocery store, each apple costs 50 cents, each orange costs 40 cents, and each pear costs 30 cents. I bought y apples, three times as many oranges as apples, and 7 fewer pears than apples. I spent a total of $19.90 on the fruits.

Write an equation to represent this situation

How many of each fruit did I buy?

Find the total cost spent on apples and pears.

Answer 1

y = # of apples

50: 50cents per apple

120 : 40 cents per orange x 3

210 : there are 7 fewer pears, times 30 cents

50y +120y +30y -210 =1,990

200y=2400

y=11

Then we can check our work.

50 times 11=550

40 times 33 =1320

30 times 4 =120

Add them up, and you get 1,990, or $19.90