Two oranges, three bananas and four apples cost Rs.15. Three oranges, two bananas

• Linear Equations

Two oranges, three bananas and four apples cost Rs.15. Three oranges, two bananas and one apple cost Rs.10. I bought 3 oranges, 3 bananas and 3 apples. How much did I pay?

1. Rs 8
2. Rs 10
3. Rs 12
4. Rs 15

Answer

Let O, B and A be the price of 1 orange, 1 banana and 1 apple respectively.

2O + 3B + 4A = 15

3O + 2B + 1A = 10

Adding two equations to get

5O + 5B + 5A = 25

3O + 3B + 3A = 15

The correct option is D.