1. 4 children sold some charity coupons. Aida sold three times
as many coupons as Bala. Cindy sold 58 more coupons
than Aida. Dennis sold 153 more coupons than the total number of coupons
than the total number of coupons sold by Dennis was 685 more than Bala.
What was the total number of coupons sold by the children?
2. A bus left the interchange with some passengers on board.
At Bus Stop A,10 passengers boarded the bus. When it reached Bus
Stop B, 3/4 of the passengers alighted.The bus continued its journey
and at Bus Stop C,2/3 of the passengers alighted while 3 passengers boarded
the bus. There were 18 passengers on the bus when it left bus stop C. How
many passengers were on the bus when it left the interchange?