book
Maths Puzzle
Numerical Ability
The difference between two numbers is -38. Two times the smaller number minus five times the larger number is -217. What are the two numbers?
Read Solution (Total 0)
book Other Question
x^2+4x+4 over 8
divided by
(x+2)^3 over 16
How do you go about solving this problem. Any help is appreciated.
A chemist mixes a 10% acid solution with a 50% acid solution to form 400ml. of a 40% solution. How much of each solution should be used in the mixture.