Eduardo wants to make 17.1 fl. oz. of a 60% sugar solution by mixing together a 80% sugar solution and a 50% sugar solution. How much of each solution must he use?

Question

hero · Answer

x + y = 17
.50x + .80y = .60(17)

hero · Answer

Can you solve it from here or no?

anonymous · Answer

no

hero · Answer

x + y = 17
.50x + .80y = 10.2

y = 17 - x
y = (10.2 - .50x)/.80

y = y

.80(17 - x) = 10.2 - .50x

13.6 - .80x = 10.2 - .50x

13.6 - 10.2 = -.50x + .80x

3.4 = .30x
3.4/.30 = x
11 and 1/3 = x
 5 and 2/3 = y

anonymous · Answer

it's alright. I now see what I have to do. thank you.

anonymous · Answer

Your x and y solutions look OK.

hero · Answer

nice. I guess the point 1 didn't matter that much