Question

If the cost of 4 and a half liters of milk is Rs 89 1/2, find the cost of 1 liter of milk.

a) Rs 18.50
b) Rs 19.50
c) Rs 20.00
d) Rs 21.00

Answer 1

To find the cost of 1 liter of milk, we can set up a proportion using the given information: 4.5 liters / Rs 89 1/2 = 1 liter / x. By solving this proportion, we find that the cost of 1 liter of milk is approximately Rs 19.77.

Step-by-step explanation:

To find the cost of 1 liter of milk, we can set up a proportion using the given information:

{{4.5 liters}/{Rs 89 rac{1}{2}}} = {{1 liter}/x}.

First, let's convert Rs 89 1/2 to a decimal: Rs 89 1/2 = Rs 89.50. Now we can solve the proportion:

{{4.5 liters}/{Rs 89.50}} = {{1 liter}/x}.

{{4.5}/{89.50}} = {{1}/x}.

Cross-multiply: 4.5x = 89.50.

Divide both sides by 4.5: x = {{89.50}/{4.5}}.

x = Rs 19.77 (rounded to two decimal places).

Therefore, the cost of 1 liter of milk is approximately Rs 19.77 (option b).