Question

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?

Answer 1

hello....

Let orange =x,banana=y,apple=z

2x+3y+4z=15−−−−−(1)

3x+2y+z=10−−−−−−(2)

Adding

5x+5y+5z=25−−−−−−−−(3)


Now,

take 5 common.....

5(x+y+z)=25

x+y+z=25/5

So, x+y+z=5…


3(x+y+z)=3(5)

3x+3y+3z =15

So, answer is 15….

thank you ☺
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