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Three companies, A, B, and C, manufacture and sell two types of vehicles: cars and buses. The number of buses sold by company C is 20 less than that sold by company A. The total number of buses sold by all three companies is 245. The total number of buses and cars sold by company A is 275. The number of cars sold by company C is equal to the number of cars sold by company B, which is 120. The ratio of the number of cars sold by company A and C is 23:15. If company A decides to increase the selling price of each car by 15% and each bus by 10%, and the original selling price of a car was ₹500,000 and a bus was ₹800,000, what is the total increase in revenue for company A?

1. ₹20,440,000
2. ₹21,080,000
3. ₹22,780,000
4. ₹23,900,000

Correct answer: ₹21,080,000

Solution

From the data, company A sold 180 cars and 95 buses. The increase in revenue is 15% of car revenue plus 10% of bus revenue, i.e. 0.15 × 180 × 500,000 + 0.10 × 95 × 800,000. This gives ₹21,080,000.

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