Im in need of solving this Business math ratio question!

I'd be Sooo grateful if i can get some help!

Many thanks guys!

A Duvet set has been bought in colour ratio of 5:7:1:2 over colours blue, red, green, and yellow there is a total of 930 Duvets sets on order.

a) how many duvet sets are blue? 310.

b ) what is the total number of green and yellow combined ? 186.

**C) If a pair of curtains has been bought in the same ratio, how many red pairs of curtains would there be if there had been 64 pairs of yellow curtains?

I need help with C! I keep getting 60? Why!?

And its wrong!!

x