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Sunday, November 19 2017 @ 11:51 AM CST
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By: Strawberry (offline)  Saturday, February 04 2012 @ 02:00 PM CST (Read 1159 times)  
Strawberry

In a school Art Club, the ratio of the number of boys to the number of girls was 3:2. After 2 boys and 3 girls joined the club, the ratio became 4:3. How many girls were there at first?

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By: shanmugamshanthi (offline)  Saturday, February 04 2012 @ 06:54 PM CST  
shanmugamshanthi


BOYS GIRLS
AT FIRST 3U 2U
JOINED +2 +3
IN END 4P 3P

MAKE THE PARTS EQUAL BOYS*3 AND GIRLS *4
9U 8U
+6 +12
12P 12P


9U+6=8U+12
9U-8U=12-6
1U=6
Girls=2U=2x6
=12

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By: adilah9 (offline)  Saturday, February 04 2012 @ 10:37 PM CST  
adilah9

Quote by: shanmugamshanthi


BOYS GIRLS
AT FIRST 3U 2U
JOINED +2 +3
IN END 4P 3P

MAKE THE PARTS EQUAL BOYS*3 AND GIRLS *4
9U 8U
+6 +12
12P 12P


9U+6=8U+12
9U-8U=12-6
1U=6
Girls=2U=2x6
=12



Can I know why make the parts (boys and girls) equal?

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By: Strawberry (offline)  Sunday, February 05 2012 @ 08:43 PM CST  
Strawberry

thank you

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