There are 75 students in classes A and B altogether. There are 61 students in classes A and C altogether. The ratio of the numbe

Question

3 years ago

9

r of students in Class B to Class C is 5:3. How many students are there in Class A?

2 answers:

morpeh [17] · Answer 1 · 2022-09-03T19:39:28+03:00

6 0

Answer:

A = 40

Step-by-step explanation:

A+B = 75

A+C = 61

Subtract

A+B = 75

-A-C = -61

----------------------

B-C = 14

B:C

5:3

for every 5B there are 3C

Replace B with 5/3 C

5/3C-C = 14

2/3C = 14

C = 21

A+C = 61

A +21 = 61

A = 40

Bezzdna [24] · Answer 2 · 2022-09-03T17:38:19+03:00

3 0

Answer:

40

Step-by-step explanation:

A + B=75

A + C = 61

B = 5/3 *C

A+C * 5/3 = 75 then we got the answer