BPP 17 Slow fashions

Hello I am studying this subject in case i did not pass in march in addition to June exam Why are we prepared to pay an extra 7% for the rejected projects on top of the 10%. I thought that was the reason they were rejected. I just don't understand the logic of being prepared to pay more than normal Why do they add the 7% to the 10% on the rejected projects. 7% is the return of the rejected projects so you are losing 3 odd percent