1 pound of carrots would be $0.70 and 1 pound of broccoli would be $0.85.
This shows (5,2) on a graph
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:
I think is 1x+3x=4 and then solve it if you have to