haresh went to buy fruits.she bought 1 apple , 3 bananas , 5 oranges and paid 21 rupees.another person bought 7 apple ,5 bananas , 3 oranges and paid 51 rupees.if i want to buy 1 apple, 1 banana , 1 orange then how much i have to pay?  Answers.
A) 8 B) 9 C) 10 D) 11 E) 7
There can be multiple possible rates of apple, banana and orange to satisfy given conditions, But cost of 1 apple, 1 banana , 1 orange will be Rs 9.   1x+3y+5z = 21........(1)   7x+5y+3z = 51........(2)   Adding (1) and (2), we get   8x+8y+8z = 72   8*(x+y+z)=72   x+y+z=9   ANSWER:9
<result>B</result>
haresh went to buy fruits.she bought 1 apple , 3 bananas , 5 oranges and paid 21 rupees.another person bought 7 apple ,5 bananas , 3 oranges and paid 51 rupees.if i want to buy 1 apple, 1 banana , 1 orange then how much i have to pay?