atifatifatif172000 atifatifatif172000
  • 15-03-2022
  • Mathematics
contestada

In a class there are 21 boys and girls make up 0.4 find the total students in class

Respuesta :

jimrgrant1 jimrgrant1
  • 15-03-2022

Answer:

35

Step-by-step explanation:

let x be the number of students in the class

then number of girls = 0.4x , so

x = 21 + 0.4x ( subtract 0.4x from both sides )

0.6x = 21 ( divide both sides by 0.6 )

x = 35

the total number of students is 35

Answer Link

Otras preguntas

[(24+16) divided by 8 times 5)]=? Please answer pllleeeaaaasee.
Can someone tell me what is a Genre?
Acme Inc. spent $870 less on postage than on supplies. The ratio of postage costs to supply costs was 2 to 5. How much did Acme spend on postage? Solve this pro
luisa has 183 pennies. hert dad gives her 128 more write a number sentence to show many pennies luisa has now
What is the next number of the pattern. 2 7 26 101 400
[(24+16) divided by 8 times 5)]=? Please answer pllleeeaaaasee.
A microscope is set so it makes an object appear 4 x 10`2 times larger than its actual size. A virus has a diameter of of 2 x 10`-7 meter. how large will the di
What are Radio Waves?
what does the numerator tell us in fraction
Find the explicit formula that produces the given sequence. 3/2, 3/4, 3/8, 3/16,...