(this is only 7th-grade math!!) how to find the rates? also sorry if some of the ones i put are wrong, i have a big headache rn and i cant focus on math

i think under 3 1/2 its 87.50 and under the 4 its 100

Step-by-step explanation:

for every 1/2 hour he gets $12.50

i hope this is right :)

15% chance.

step-by-step explanation:

3/10 times, the 5 year old will get a tablet. 5/10 times, the 13 yer old will get a tablet. multiply both fractions to get 15/100 times, both would have a tablet.