Five minutes ago, 70% of the students in a tuckshop were girls. 94 more students entered the tuckshop. As a result, the number of girls increased by 20% and the number of boys increased by 90%. How many students are in the tuckshop now?
| |
Girls |
Boys |
Total |
| Before |
10 u |
3 u |
13 u |
| Change |
+ 2 u |
+ 2.7 u |
+ 4.7 u |
| After |
12 u |
5.7 u |
17.7 u |
70% =
70100 =
710Number of more girls who entered the tuckshop
= 20% x 10 u
=
20100 x 10 u
= 2 u
Number of more boys who entered the tuckshop
= 90% x 3 u
=
90100 x 3 u
= 2.7 u
Total number of more students who entered the tuckshop
= 2 u + 2.7 u
= 4.7 u
4.7 u = 94
1 u = 94 ÷ 4.7 = 20
Number of students in the tuckshop now
= 12 u + 5.7 u
= 17.7 u
= 17.7 x 20
= 354
Answer(s): 354
