At a carnival, the children were put into two groups. 34 of Group S were girls and 45 of Group T were boys. Group T had twice as many children as Group S. There were 63 fewer girls in Group S than Group T.
- What fraction of the total number of children at the carnival were girls? Give your answer in the simplest form.
- What was the total number of children at the carnival?
Group S |
Group T |
Total |
1x4x5 = 20 u |
2x4x5 = 40 u |
3x4x5 = 60 u |
Girls |
Boys |
Girls |
Boys |
|
3x5 |
1x5 |
1x8 |
4x8 |
|
15 u |
5 u |
8 u |
32 u |
|
(a)
The number of children in Group S is repeated. Make the number of children in Group S the same. LCM of 1 and 4 is 4.
The number of children in Group T is repeated. Make the number of children in Group T the same. LCM of 5 and 8 is 40.
GirlsTotal =
15 + 820 + 40 =
2360 (b)
Number of fewer girls in Group S than Group T
= 15 u - 8 u
= 7 u
7 u = 63
1 u = 63 ÷ 7 = 9
Total number of children
= 60 u
= 60 x 9
= 540
Answer(s): (a)
2360; (b) 540