sukijaki2003 sukijaki2003
  • 30-04-2015
  • Mathematics
contestada

there are 420 girls and boys at a community centre.The ratio of girls and boys at the centre is 7to 3.How many girls are at the concert

Respuesta :

crisforp
crisforp crisforp
  • 30-04-2015
g + b = 420 ;
g / b = 7 / 3 ;
Then, g = ( 7 / 3 )b;
( 7 / 3 )b + b = 420 ;
7b + 3b = 1260 ;
10b = 1260 ;
b = 126 ( boys );
g = ( 7 / 3 )× 126 = 294 ( girls ) ;
Answer Link

Otras preguntas

To maintain structure and coherence, a writer can use an established graphic organizer or create an original one. True False
What is the unit rate of y= -x/6
carlos and maria drove a total of 217 miles in 4.1 hours. carlos drove the first part of the trip and averaged 52 miles per hour. maria drove the remainder of t
16 4 12 36 9 27 44 11 complete the pattern
How many moles are in 15.0 grams of neon
which is most likely to provide reliable information about architecture?
Which of the following measurements is expressed to three significant figures? a. 0.0006 m b. 6066 mg c. 6.40 10-7 km d. 0.060 mm
Codes 90951-90962 are reported ____ to distinguish age-specific services related to the patient's end-stage renal disease performed in an outpatient setting dep
Which of the following has the largest aperture opening? f/1.8 f/2.8 f/4 f/5.6
What type of government was created to rule ancient egypt theocracy democracy republic anarchic state?