Question

A and b together invested 12000in a business at the end of the year out of total profit 1800 the share of a was 750 find the investment of a

Answer 1

$\frac{1800}{12000} = \frac{3}{20} \\ \frac{3}{20} \times 100 = 15 \: percent \: profit$
share of A = 750
share of B = 1800-750 = 1050
ratio of share of a and b = 750/1050 = 5/7
let their investment be 5x and 7x
5x + 7x = 12000
12x = 12000
x = 1000
share of a = 5x = 5000

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