joannadegro
joannadegro joannadegro
  • 02-03-2017
  • Mathematics
contestada

The ratio of girls to boys in the geography bee was 5 to 4. There were 36 total students. How many were boys?

Respuesta :

H1a2r3s4h5 H1a2r3s4h5
  • 02-03-2017
Girls:boys=5:4
So girls=5x
Boys=4x
total students=36
5x+4x=36
9x=36
x=4
So girls are=5x=5×4=20
Boys are=4x=4×4=16
Answer Link

Otras preguntas

Going against the natural flow of heat and moving thermal energy from a low temperature to a high temperature is _____.
On federal income tax returns, self-employed people can depreciate the value of business equipment. Suppose a computer valued at $2765 depreciates at a rate of
What is the product of 3x and -4x^2
Tonya has a small picture with a length of inches. She wants to enlarge the picture by a factor of 7 and frame it. Which of the following is true?
6x + 8 = 2x + 4 A: -4 B: -1 C: 4 D: 0 Please comment below
jill is thinking of a new password for her phone. She wants to use the numbers 7, 1, and 8. How many different passwords could she make with these numbers?
An HCl solution has a concentration of 3.26 x 10-2 M. What is the pH of this solution? pH = 12.5 pH = 1.49 pH = 3.3 pH = 2.0
a town experiences a smaller earthquake several days later a larger one . What has occurred?
Find the sum of -x-2 and 9x^2+5
Who is one of los personajes principales of La historia oficial? (1 point) an adopted little girl an aging historian a noble gaucho a dictator 9. What typ