80% of the students in Lea’s class earned an A or a B on the weekly math test. If 20 students got an A or a B, how many students

Question

2 years ago

11

80% of the students in Lea’s class earned an A or a B on the weekly math test. If 20 students got an A or a B, how many students

are in Lea’s class?
20 is 80% of what number?
20 × 4 = 80, so 100 × 4 = 400 students
20 + 60 = 80, so 100 + 60 = 160 students
80 ÷ 4 = 20, so 100 ÷ 4 = 25 students
80 – 60 = 20, so 100 – 60 = 40 students

Mathematics

2 answers:

blagie [28] · Answer 1 · 2022-03-24T09:43:05+03:00

blagie [28]2 years ago

8 0

Answer:

c

Step-by-step explanation:

Anna35 [415] · Answer 2 · 2022-03-24T07:33:06+03:00

Anna35 [415]2 years ago

6 0

Answer:

80 ÷ 4 = 20, so 100 ÷ 4 = 25 students

Step-by-step explanation:

Is means equals to and of means multiply

20 = 80% * N

20 = .80 N

Divide each side by .8

20 / .8 = N

25 = N

there are 25 students