Question

The daily consumption of milk in a house is 4.65 litres. How much milk will be consumed in 31 days.

Answer 1

Hint:This problem is an example of usage of multiplication function. When a particular value x is provided and if we need to repeat the value multiple times say k times, either x will be added to itself k times or in other words, x will be multiplied with the number k.

Complete step-by-step answer:
Given,
The daily consumption of milk in a house is 4.65 litres.
Let x be the quantity of milk in litres in a house. Then,
X= 4.65
As they have asked to find the quantity of milk consumed in 31 days,
Let k be the number of days for which we need to find the quantity of milk consumed.
Implies k= 31
Now the final quantity of milk in litres consumed in 31 days is to be found. Thus we need to add the per day consumption 31 times or in other words we can say the per day consumption gets multiplied by 31.
The quantity of milk consumed in 31 days $ = x \times k = 4.65 \times 31 = 144.15$litres.

Milk consumed in 31 days = 144.15 litres

Note:Multiplication function is an inevitable mathematical function for several practical applications like consumptions of goods for several days using per day consumption, expenditure for several days by using expense per day, price of a pack of commodity using per item price etc.
Adding a value say x for about k times \[ = {\text{ }}x + x + \ldots + k\]times $ = x(1 + 1 + ...k$times)$ = xk$ which indicates the multiplication of x value with k.