QvxxnDolly1 QvxxnDolly1

22-02-2015
Mathematics

contestada

the ratio of boys to girls on a swimming team is 3 to 4. the team has 70 members. how many are boys?

Respuesta :

mathlovingguy mathlovingguy

22-02-2015

Number of boys are 30

Assume number of boys (X) , Number of Girls (Y)
X + Y = 70 (1)
X/Y = 3/4
Y = 4/3X (2)

replacing the value of Y in (2) in number (1)

X + 4X/3 = 70
7X/3 = 70
7X = 210
X = 30

so number of boys = 30 boys

Answer Link

Otras preguntas

For a scientific research study, 75 beavers were captured, tagged, and set free. Later, the researchers returned and found 15 tagged beavers out of the 760 beav

Which word is a synonym of verify? consent or confirm

Help i need this done by tomorrow Can someone take screeen shots and do tha work then send it ill make u brainliast

4. Match the main works in this unit to their description. A. From The American Crisis B. Aboard a Slave Ship C. From Common Sense D. The Declaration of Indepe

Can anyone help me with the question in the picture?

What is the value of (m- n)(n+ m) when m=3 and n= 4?

what is the meaning of this line of the declaration of independence

A blue print for a house has a scale of 1 in:5 feet. The living room has a length of 2.5 inches and a width of 3 inches. What is the actual area of the living r

factor completely x^2-4

Changes in a population over time is due to what