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 P4 2009 SA2 Math Question 45. Answer given is wrong?
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By: kellywww (offline)  Friday, October 01 2010 @ 08:40 PM CDT (Read 1479 times)  
kellywww

Question 45)
At a party, 3/7 of the people attending were adults, 2/5 of the children were boys.
If there were 48 girls,
a) how many children were there?
b) how many people were at the party?

My answers are:
a) 160
b) 280

The answers given are:
a) 80
b) 140

Can someone help to confirm the answers? Many thanks! Big Grin

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By: aboonchin (offline)  Friday, October 01 2010 @ 11:37 PM CDT  
aboonchin

The answers given are correct.

3/5 of the children makes 48 girls. 1/5 would be 48/5 = 16. Thus total number of children would be 16x5=80

80 children makes 4/7 of total number of people. 1/7 would be 80/4 = 20. Thus, total number of people would be 20x7=140.

Hope this clarifies. Smile

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By: kiransudheer (offline)  Friday, October 08 2010 @ 12:45 AM CDT  
kiransudheer

Quote by: aboonchin

The answers given are correct.

3/5 of the children makes 48 girls. 1/5 would be 48/5 = 16. Thus total number of children would be 16x5=80

80 children makes 4/7 of total number of people. 1/7 would be 80/4 = 20. Thus, total number of people would be 20x7=140.

Hope this clarifies. Smile



3/5 of the children makes 48 girls. 1/5 would be 48/5 = 16. Thus total number of children would be 16x5=80

Pl note that 3 unit of girls represent 48 sof for one unit it should be 48/3 = 16. Thus the no of children would be 16x 5 = 80

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By: kellywww (offline)  Sunday, October 17 2010 @ 12:43 AM CDT  
kellywww

thks folks Big Grin

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