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.

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book Other Question

Sammy has 4/9 of a share of stock. He gave 1/18 of what he had to each of his grandchildren. How many grandchildren does he have? (He gices away the entire 4/9 of the share of his stock). solve and write in scientific notation: (10 x 10^-41) ( 60000 x 10^-12)