Manuel wishes to purchase 0.25 & .30 stamps. He deicdes to buy 10 fewer 0.30 stamps. How many of each can he buy for no more than $19.00?
2007-02-26 00:08:26 · 4 answers · asked by juvyong 1 in Science & Mathematics ➔ Mathematics
let x = the number of stamps purchased/
19> .25x - .3(x-10)
I'll let you solve it from there
2007-02-26 00:12:27 · answer #1 · answered by Meg 2 · 0⤊ 0⤋
0.25(x+10) + 0.30x <= 19
0.25x +2.5 + 0.30x <= 19
0.55x <= 16.5
x <= 30
He can buy no more than 30 $0.30 stamps and 40 $0.25 stamps.
2007-02-26 08:13:17 · answer #2 · answered by gebobs 6 · 0⤊ 0⤋
You can't call it an inequality problem. Better to find the number of stamps he can buy for $19, which you are anyway doing.
2007-02-26 08:44:09 · answer #3 · answered by nayanmange 4 · 0⤊ 0⤋
0.25(x+10) + 0.30x <= 19
0.25x +2.5 + 0.30x <= 19
0.55x <= 16.5
x <= 30
2007-02-26 09:02:34 · answer #4 · answered by Anonymous · 0⤊ 0⤋