Please help me answer this

How many bananas are in a fruit bowl that has 200 total apples and bananas if there are 31 bananas for every 93 apples

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document