What is the ratio of total production of all the companies to the sales of all the companies?
P=700+900+600+400+1000++800=4400 S=500+800+400+300+700+600=3300 P:S=4400:3300=4:3
Total production of Company S for all the given years is what per cent of the total production of Company Q for all the given years? (rounded off to the nearest integer)
Production of Company S in 1999 is what per cent of the total production of the company for all the given years? (rounded off to two digits after decimal)