If the total number of boks published P,Q and R is increased by 30% and the total number of books pyblished by remaining publishers be decreases by 20% what will be the new average of books published by all the publishers ?

Options

A. 33418
B. 33318
C. 32518
D. 33618

Answer

B

Explanation

Total books published by Publishers P,Q and R
`=(13200+33800+35700)xx(130)/(100)`
`=100700xx(130)/(100)=130910`
Books publihsed by remaining publishers
`=(28200+32200+29700+37800)xx(80)/(100)`
`=(127900xx80)/(100)=102320`
`:.` Required average
`=(130910+102320)/(7)=(233230)/(7)=33318`