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Sunday, October 22 2017 @ 05:51 PM CDT
 Forum Index >  Test Paper Related >  Primary 6 Matters
 Math problem sum
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By: hoo_2000 (offline)  Friday, February 17 2012 @ 06:49 PM CST (Read 876 times)  
hoo_2000

Can somebody help me solve these questions?
Q1:A cake shop had some tarts to sell.4\5 of them were pineapple tarts and the remaining were blueberry tarts.After 5\8 of the pineapple tarts and 2\3 of the blueberry tarts were sold,there were 979 tarts left.How many tarts were sold?

Q2:Alvin,Ben,Chris and David shared the cost of the gift.Alivin gave $270,Chris gave 1\3 of the total amount,while David gave 2\9 of the amount.If Ben gave $40 less than Chris,what was the total cost of the gift?

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By: awyw1201 (offline)  Friday, February 17 2012 @ 11:09 PM CST  
awyw1201

Q1:A cake shop had some tarts to sell.4\5 of them were pineapple tarts and the remaining were blueberry tarts.After 5\8 of the pineapple tarts and 2\3 of the blueberry tarts were sold,there were 979 tarts left.How many tarts were sold?


Ratio of P:B----4 : 1 = 24: 6
Units of P left----3/8 x 24u= 9u
Units of B left---1/3 x 6u = 2u

9u + 2u = 11u---979
1u = 979/11= 89

Total units sold----30u - 11u = 19u
19u---89 x 19 = 1691

Ans: 1691 tarts


Q2:Alvin,Ben,Chris and David shared the cost of the gift.Alivin gave $270,Chris gave 1\3 of the total amount,while David gave 2\9 of the amount.If Ben gave $40 less than Chris,what was the total cost of the gift?


Let the total cost be 9u
Chris---3u
David----2u
Alvin + Ben---4u

Since Ben has $40 less than Christ, this means
Ben----3u - 40

Thus,3u - 40 + 270 = 4u
3u +230 = 4u
1u= 230
9u = 230 x 9 =2070

Ans: $2070






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By: hoo_2000 (offline)  Saturday, February 18 2012 @ 12:43 AM CST  
hoo_2000

thanks Big Grin

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