涛涛21-14（第21套第14题）求助！

cateyong

The charge for a single room at Hotel P is 25 percent less than the charge for a single room at Hotel R and 10 percent less than the charge for a single room at Hotel G.  The charge for a single room at Hotel R is what percent greater than the charge for a single room at Hotel G ?

 

A.        15%

B.        20%

C.        40%

D.       50%

E.      150%

如何得出答案B？

设P=1, R=1.25, G=1.1. (R-G)/G=0.15/1.1

大家看错在哪里？

cateyong

“R求错了，R=5/3而不是1.25“？

谢谢2楼，不过还是想不同R=5/3？，设P=1, R=1X(1+25%)=1.25, G=1X(1+10%)=1.1

哪位指教，谢谢！

小萧笑

R求错了，R=5/3而不是1.25