exam Maths Puzzle Numerical Ability

Ricardo is 4 years less than twice as old as his sister. The sum of their ages is 20. How old is Ricardo?

Thanks

Read Solution (Total 0)

exam Other Question

i have been trying to solve the following problem, but have not been successful at doing so. I need help!!! Please

square root of 6 divided by 4 nth root of 36. Thanks Write the equation of the line which has y-intercept (0, 5) and is perpendicular to the line with equation y = -3x + 1.