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Thursday, July 20 2017 @ 03:32 PM CDT
 Forum Index >  Test Paper Related >  Primary 4 Matters
 Maths (2 sums)
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By: achieve_goal (offline)  Tuesday, November 01 2011 @ 08:49 AM CDT (Read 989 times)  
achieve_goal

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?

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By: GIM (offline)  Tuesday, November 01 2011 @ 10:53 PM CDT  
GIM

Question 1 :seemed to have some error. (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.)-- Not clear.


Question 2:

Left Bus stop A -----X + 10=A

Left Bus stop B -----1/4 A

Left Bus stop C -----(1/3 x 1/4A) + 3 = 18

(1/3 x 1/4A) + 3 = 18
1/12A + 3 = 18
1/12A = 18-3=15
A = 15 x 12 = 180

Left interchange = 180 - 10 = 170 passeners ( answer)

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