book Maths Puzzle Numerical Ability

Suppose that you have a supply of a 30% solution of alcohol and a 70% solution of alcohol. How many quarts of each should be mixed to produce 20 quarts that is 40% alcohol?

Read Solution (Total 0)

book Other Question

Help Please! I've been working on this for hours and I can't seem to get it.

Bus leaves for vegas 1t 5 PM, distance is 270 miles

Next day bus leaves for same trip, but late, what is the answer for -1/7z - 5= 0. I keep getting 35