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Blababa [14]
3 years ago
6

The number of boys is 3/5 of the number of girls. If there are 120 children all together, how many boys are there? PLEASE HELP M

E!!!!!!!!
Mathematics
2 answers:
viktelen [127]3 years ago
5 0

Answer:

72 boys

Step-by-step explanation:

120 * .60. That's how you solve it! Hope it helps!

Further explanation:

To get .60, you divide 3 by 5 which is .60

Then you multiply 120 times .60 and you'll get 72 which is 72 boys

Bonus: 120 - 72 = 48 girls!

TiliK225 [7]3 years ago
4 0

Answer:

There are 45 boys.

Step-by-step explanation:

The best way to easily solvethis is by making equations, see below.

let \: b \: represent \: number \: of \: boys \\ let \: g \: represent \: number \: of \: girls

b + g = 120 \\ b =  \frac{3}{5} g

Now we can subtract the secons equation from the first.

g = 120 -  \frac{3}{5} g

I'm also goong to multiply the equatipn by 5 to remove the fraction.

5g =  - 3g + 600

Now simplify

8g = 600 \\ g = 75

Now we found out there are 75 girls. Now we insert this into our second equation to find how many boys there are.

b + 75 = 120 \\ b = 45

Now we know there are 45 boys.

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