book
Maths Puzzle
Numerical Ability
A rectangle is 7 times as long as it is wide. Its area is 1400cm squared. Find the dimensions of the rectangle in simplest form.
Read Solution (Total 0)
book Other Question
A woman invested four times as much at 5% as she did at 6%. The total amount of interest she earns in one year from both accounts is $520. How much did she invest at each rate?
Solve the determinant
3 x
1 1 = 2
(the 3 x and 1 1 are inside determinant signs)