Question

jim saves 15% of his monthly salary. each month he saves £90. What is his monthly salary

Answer 1

Hi.

$1\%=\dfrac{15\%}{15}\ \therefore\ 1\%=\dfrac{90}{15}=6\\\\\\100\%=1\%\cdot100\\100\%=6\cdot100\\\boxed{100\%=600}$

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