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.
Answer:
<em>s = 5.4</em>
Step-by-step explanation:
2^2 + 5^2 = s^2
s^2 = 4 + 25
s^2 = 29
s = sqrt(29)
s = 5.4