Mrs Apolot a fruit seller bought 120 mangoes at sh 120 per mango and 30 oranges at sh 400 each. She later sold each mango at sh 150 and each orange at sh 500. Calculate the profit Mrs Apolot made from selling the fruits.

Mrs. Apolot bought 120 mangoes at Sh 120 each.

$$\text{Cost of mangoes} = 120 \times 120 \text{ Sh} = 14400 \text{ Sh}$$

Mrs. Apolot bought 30 oranges at Sh 400 each.

$$\text{Cost of oranges} = 30 \times 400 \text{ Sh} = 12000 \text{ Sh}$$

$$\text{Total CP} = \text{Cost of mangoes} + \text{Cost of oranges}$$ $$\text{Total CP} = 14400 \text{ Sh} + 12000 \text{ Sh} = 26400 \text{ Sh}$$

She sold each mango at Sh 150.

$$\text{Selling price of mangoes} = 120 \times 150 \text{ Sh} = 18000 \text{ Sh}$$

She sold each orange at Sh 500.

$$\text{Selling price of oranges} = 30 \times 500 \text{ Sh} = 15000 \text{ Sh}$$

$$\text{Total SP} = \text{Selling price of mangoes} + \text{Selling price of oranges}$$ $$\text{Total SP} = 18000 \text{ Sh} + 15000 \text{ Sh} = 33000 \text{ Sh}$$

Profit is the difference between the total selling price and the total cost price.

$$\text{Profit} = \text{Total SP} - \text{Total CP}$$ $$\text{Profit} = 33000 \text{ Sh} - 26400 \text{ Sh} = 6600 \text{ Sh}$$

The profit Mrs. Apolot made is $\text{Sh } 6600$.