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

75 BRAINLIEST Gather some common well-known stories from fables, fairy tales, or nursery rhymes and analyze the plot and conflict structure of them. Explain how

Apple pies cost $5.75 each and cherry pies cost $6.50 each.Susan bought nine pies for a total cost of $53.25.There is no tax charged.How many apple pies did Sus

Plz plz help plz fix plz help plz plz reply plz help plz plz help help plz help me help due in 5 mins

The Law of what of energy states this: The Law of ___________ of energy states that energy cannot be created or destroyed.

nine and 27/32 equal in a fraction

A parallelogram-shaped field in a park needs sod. The parallelogram has a base of 2.15 meters and a height of 18 meters. The sod is sold in pallets of 50 square

Identify the sentence that correctly uses commas to separate elements in a series. Select “Check Answers” to see how well you did. 1. Which sentence correctly u

43. Although it has since been destroyed, which Sumarian architectural work is mentioned in the Bible? A. Warka Vase B. Tower of Babel C. Temple of Ramses D.

What was the Hellenistic Civilization? Why was the Hellenistic Civilization important?

A. Using the given figure below. Answer each of the following items. 1. Name 4 points. 2. Name two segments with a common endpoint E. 3. Name two rays with endp