PSLE In a school, 60% of the members in Drama Club and 70% of the members in Reading Club are boys. Both clubs have the same number of girls. The Drama Club has 15 less boys than the Reading Club. How many members are there in Reading Club?
|
Drama Club |
Reading Club |
Types |
Boys |
Girls |
Boys |
Girls |
Comparing the boys and the girls in each club |
3x3 |
2x3 |
7x2 |
3x2 |
Comparing the girls in 2 clubs |
|
1 |
|
1 |
|
9 u |
6 u |
14 u |
6 u |
60% =
60100 =
35 Fraction of the members in Drama Club that are girls
= 1 -
35 =
25 70% =
70100 =
710 Fraction of the members in Reading club that are girls
= 1 -
710 =
310 The number of girls in both clubs is the same. Make the numerators the same. LCM of 2 and 3 is 6.
2x35x3 of the members in Drama Club =
3x210x2 of the members in Reading Club
615of the members in Drama Club =
620 of the members in Reading Club
Number of less boys in Drama Club than Reading Club
= 14 u - 9 u
= 5 u
5 u = 15
1 u = 15 ÷ 5 = 3
Number of members in Reading Club
= 20 u
= 20 x 3
= 60
Answer(s): 60