Four minutes ago, 70% of the children in a canteen were girls. 64 more children entered the canteen. As a result, the number of girls increased by 40% and the number of boys increased by 80%. How many children are in the canteen now?
|
Girls |
Boys |
Total |
Before |
10 u |
3 u |
13 u |
Change |
+ 4 u |
+ 2.4 u |
+ 6.4 u |
After |
14 u |
5.4 u |
19.4 u |
70% =
70100 =
710Number of more girls who entered the canteen
= 40% x 10 u
=
40100 x 10 u
= 4 u
Number of more boys who entered the canteen
= 80% x 3 u
=
80100 x 3 u
= 2.4 u
Total number of more children who entered the canteen
= 4 u + 2.4 u
= 6.4 u
6.4 u = 64
1 u = 64 ÷ 6.4 = 10
Number of children in the canteen now
= 14 u + 5.4 u
= 19.4 u
= 19.4 x 10
= 194
Answer(s): 194