book Maths Puzzle Numerical Ability

Molly is 4 years younger then Heidi. In 3 years, Heidi will be twice as old as Molly. How old are they now?

Read Solution (Total 0)

book Other Question

What are two consecutive odd integers whose sum is 56? If someone could please help me with the following problem that would be great.
f(x)=2x^2-3x+7 g(x)=3x+5
19.f(g(x))