Five Stalls at the Food Fair

PRACTICE
100:00+4 −1MCQ Single Answer
Data / Set
Five stalls — PP, QQ, RR, SS and TT — sold food at a one-day fair. Between them they sold 240240 plates in all. The table below gives the price charged per plate at each stall:
StallPrice per plate (₹)Plates sold
PP6060
QQ8080
RR5050
SS100100
TT4040
The following is additionally known about that day: - Every stall sold a number of plates that is a multiple of 1010, and no stall sold fewer than 2020 plates. - The stalls took ₹15,60015{,}600 in all. - Stall SS sold exactly half as many plates as stall RR. - Stall QQ sold 2020 plates more than stall PP. - Stall SS sold fewer plates than every other stall.
How many plates did stall RR sell?
Answers unlock once you submit