求助一道GMAT数学题At a bakery,all donuts are priced equally and all
求助一道GMAT数学题
At a bakery,all donuts are priced equally and all bagels are priced equally.What is the total price of 5 donuts and 3 bagels at the bakery?
(1) At the bakery,the total price of 10 donuts and 6 bagels is $12.90.
(2) At the bakery,the price of a donut is $0.15 less than the price of a bagel.
答案为什么是A不是C呢?条件（1）（2）加在一起不是可以得出donut和bagel的单价嘛?然后就可以求出he total price of 5 donuts and 3 bagels at the bakery啦?
At a bakery,all donuts are priced equally and all bagels are priced equally.What is the total price of 5 donuts and 3 bagels at the bakery?
(1) At the bakery,the total price of 10 donuts and 6 bagels is $12.90.
(2) At the bakery,the price of a donut is $0.15 less than the price of a bagel.
答案为什么是A不是C呢?条件（1）（2）加在一起不是可以得出donut和bagel的单价嘛?然后就可以求出he total price of 5 donuts and 3 bagels at the bakery啦?
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