Answer:
18
Step-by-step explanation:
36/4=9 9/2=4.5 4.5+4.5+4.5+4.5=18
First we must change these numbers to improper fractions:


So then we set it up:
÷ 
When we divide fractions like this, we must flip the second fraction and change the sign from division to multiplication like so:

Then we solve:

Then if we divide the numerator and the denominator by 9, we get:
or, in mixed-number form,
.
Answer:
Not normal, because we expect fewer than 10 children to redeem the coupon.
Step-by-step explanation: