Question

A vendor supplies $42$ litres of milk to a hotel in the morning and $58$ litres in the evening. If the milk costs $15$ per litre, how much money is due to the vendor per day. (Use distributive property)

Answer 1

Step $1$; Find the cost of 42 litres of milk.

Cost of per litre milk $=$ $₹$$15$
Therefore, cost of 42 litres of milk $=42\times 15$
Step 2; Find the cost of 58 litres of milk.

Therefore cost of $58$ litres of milk $=$ $58\times 15$

Step $3$; Find the amount due to the vendor per day.

Therefore, the amount due to the vendor per day $=42\times 15$$+$ $58\times 15$

Using Distributive property of Multiplication over Addition

$=42\times 15$ $+$ $58\times 15$

$$\begin{gathered} =15\times (42+58) \\ =15\times 100 \\ =₹1,500 \end{gathered}$$

Hence, $₹1,500$ is due to the vendor per day.