Mathman couldn't resist the grooving tunes inside and paid his $5.00. He was heading straight for the punch bowl when he noticed a witch mixing it together using a solution which was 60% lizard drool and another that was only 25% lizard drool. If she wanted to make 30 liters of 39% lizard drool, how much of each does she need?

Question

Mathman couldn't resist the grooving tunes inside and paid his $5.00.  He was heading straight for the punch bowl when he noticed a witch mixing it together using a solution which was 60% lizard drool and another that was only 25% lizard drool.  If she wanted to make 30 liters of 39% lizard drool, how much of each does she need?

thanks so much!

Steve · Answer

Add up the amount of drool in each part. .60x + .25(30-x) = .39*30 .60x + 7.5 - .25x = 11.7 .35x = 4.2 x = 12 12L 60% 18L 25%