Answer :
Answer:
90%
Step-by-step explanation:
so in terms of half hours, jason played 10 during summer and 1 during school, which gives you 10% (1/10) of his usual gaming time, making his decrease 90%
5 /100 = .5 / x
.05 * x = .5
x = .5 / .05
x = 10
100% to 10% = 90% decrease
.05 * x = .5
x = .5 / .05
x = 10
100% to 10% = 90% decrease