Question

A city has an average demand of water of 33,000 Lts. of water which lasts for 50 days. But if some people enter the city, then the demand increases to 37,000 Lts. of water for which supply will lasts 35 days. Give an estimation of how much minimum water should be used daily so that it could last 50 days?
1. 24,253.00 Lts.
2. 23,666.66 Lts.
3. 23,662.34 Lts.
4. 24,123.72 Lts.

Answer 1

Correct Answer - Option 2 : 23,666.66 Lts.

Calculation:

Water demand per day = 33,000 Lts

Then, water demand for 50 days = 33,000 × 50 = 16,50,000 Lts

When new people joined, water demand per day = 37,000 Lts

Then, water demand for 35 days = 37,000 × 35 = 12,95, 000 Lts

Amount of water left for 15 days = 16,50,000 - 12, 95, 000 = 3,55,000 Lts

Then, amount of water to be used per day = 3,55,000/15 = 23,666.66 Lts.

∴ The amount of water to be used per day is 23,666.66 Lts.