Answer:
15
Step-by-step explanation:
1/20=5%
2/20=10%
...
if the questions he got right equals x, and each question he got right equals 5%, than x/20=75% because he got 75% right.
now to solve it.
x/20=75%
percent means divided by 100 so
x/20=75/100
x/20*20=(75/100)*20
x=0.75*20
x=15
he got 15 questions correct
