exam Maths Puzzle Numerical Ability

A father is 4 times as old as his son. In 20 years he will be twice as old. How old are they now?
years,

Read Solution (Total 0)

exam Other Question

O.K., another I just can't seem to work out...

Graph the following equations; calculate the slope, x-intercept and y-intercept and label the intercepts on the graph.
y=x+3

. How do I express this problem as a single Logarithm?