shannongoddard0 shannongoddard0
  • 17-01-2018
  • Mathematics
contestada

There are between 24 and 40 students in a class the ratio of boys to girls is 4:7 how many students in the class

Respuesta :

dannielle
dannielle dannielle
  • 27-04-2020

Answer:

33 students

Step-by-step explanation:

nr of boys-b

nr  of girls-g

b/g=4/7  

*7       *7

7b/g=4

*g       *g

7b=4g

we know  b+g=24.....40  

                 *4         *4

 4b+4g=between 96(24*4)   and 160(40*4)

but  4g=7b

4b+7b= 96.......160

11b=96.....160

but  multiple of 11  could be 99,110,121, 132, 143, 154

then b could be 9,10,11,12,13 or 14

if  b=12  

7b=4g so 7*12=4*g then   g=7*12/4=84/4=21

then  12+21=33  students

Answer Link

Otras preguntas

REAL SQUARE ROOTS OF 36/49
Who conquered Persia in the 330s BC? Darius I Cambyses Cyrus the Great Alexander the Great
Which statement best describes how people greet each other in Chile?
How to do moles in chemistry
Need help quick ASAP!!!!!!!!
There are 461 students and 20 teachers taking buses on a trip to a museum. Each bus can hold a maximum of 52. What is the least number of buses for the trip?
What translation was used on ABCD to produce A'B'C'D'?
What influence does Ikemefuna have on Nwoye? Select all that apply. Nwoye starts to make fun of women Nwoye begins to feel grownup. Nwoye spends more time with
Which describes the use of a renewable energy source? burning natural gas to power city buses using solar cells to heat water for use in homes burning coal to o
Let f(x)=2x^2−8 . The quadratic function g(x) is f(x) translated 2 units down. What is the answer.