12 grapes cost 90 $how many can bought in 40$
2 answers:
Answer:
5 grapes
Step-by-step explanation:
You can use a proportion.
12 grapes is to 90$ as x grapes is to 40$
12/90 = x/40
90x = 12 * 40
9x = 12 * 4
9x = 48
x = 5.33
Since you cannot buy 1/3 of a grape, you need to round down to the nearest whole number.
Answer: 5 grapes
Let x = the amount of grapes that can be bought for 0.40.
Note: By 90 I assume you mean 90 cents. The same for 40.
12/x = 0.90/0.40
0.90x = 12(0.40)
0.90x = 4.80
x = 4.80 ÷ 0.90
x = 5.33333
We can round the decimal to the ones place to get 5 grapes.
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