sackarooneyyyyyy sackarooneyyyyyy
  • 22-05-2020
  • Mathematics
contestada

The ratio of boys to girls in a class is 3:5. There are 40 students in the class. How many students are boys?

Respuesta :

SneeryEmperor51
SneeryEmperor51 SneeryEmperor51
  • 22-05-2020

Answer:

There are 15 boys.

Step-by-step explanation:

b = Boys

g = Girls

Set an Equation

b/g = 3/5

b + g = 40

Put 40 in for g

b/40 - b = 5b

Simplify

3 (40 - b) = 5b

Simplify

120 - 3b = 5b

Simplify

8b = 120

Simplify

4b = 60

Simplify

b = 15

Answer Link
satnav12321 satnav12321
  • 22-05-2020

Answer: 15 boys

Step-by-step explanation:

3 + 5 = 8

3/8*40 = 15

5/8*40=25

15:25

There are 15 boys.

Answer Link

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