求助2道模考题~~~~

齐涯

1、有6种cheese, 2种水果，每个dessert platter 有同样多品种的cheese和水果， 那么可有几种不同的dessert

2、working alone at its own constant rate,machine1 seals k cartons in 8 hour,working alone at its own constant rate, machine s seals k cartons in 4 hour, 2 machine, each working at its constant rate and for the same period of time, together sealed a certain number of cartons , what percent of the cartons were sealed by machine working at the faster rate?
A25%  B33又1/3%  C50% D66又2/3%  E75%

谢谢大家

齐涯

第一个好像会了，是不是6*2+C62*C22=27