Ros5y04 Ros5y04

01-04-2016
Mathematics

contestada

30 girls and boys have planned for a picnic There is a ratio of 3 girls to 7 boys How many boys are there

30 girls and boys have planned for a picnic There is a ratio of 3 girls to 7 boys How many boys are there class=

Respuesta :

Coventry0127 Coventry0127

01-04-2016

If the ratio is 3:7, that means in every group of 10, there are 3 girls and 7 boys. If there are 30 people total, then there are 3 groups of 10. Therefore 7*3=21. So there are 21 boys.

Answer Link

Otras preguntas

1. Arc QR = Arc RS = 2. Find x and y -- if your answer is not a whole number, round to the tenths!

Josh rented a truck for one day there was a base fee fee of $12 and there was additional charge of 8 cents for each mile driven the total cost (c) for driving

There were 169 tickets for a major league baseball game. The lower box tickets cost $12.50 and the upper box tickets cost $10.00. The total amount of money spen

( i only need number one and number 7 ) someone please i’m desperate i have so much work i need done by monday even if you only do one of them it is greatly app

a service station on the interstate changes $2.29 per gallon of gasoline and $1.89 per quart for oil. What would be a recourable amount to pay for 10 gallons of

1. Arc QR = Arc RS = 2. Find x and y -- if your answer is not a whole number, round to the tenths!

Solve each equation. |x+5|=-3

PLSS HELP MEEE!! It'll be very appreciated

Carter invested $70,000 in an account paying an interest rate of 1.125% compounded continuously. Savannah invested $70,000 in an account paying an interest rate

( i only need number one and number 7 ) someone please i’m desperate i have so much work i need done by monday even if you only do one of them it is greatly app