[求助]一道GWD数学题

CCAML

GWD 25-23

At a fruit stand yesterday, the price of each apple was $0.10 more than the price of each orange. What was the total revenue from the sale of oranges at the fruit stand yesterday?

(1) The number of oranges sold at the fruit stand

   yesterday was 5 more than the number of

   apples.

(2) The total revenue from the sale of apples

   at the fruit stand yesterday was $15.00

给出的答案是C. 如果设卖出O是X个, 价格是Y，由 （1）+（2）：（X-5）×（Y+0.1）=15. 求不出来XY呀