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PIT_PIT [208]
2 years ago
7

The ratio of boys to girls in chorus is 2:5. If there are 42 students in the chorus how many are boys

Mathematics
2 answers:
ASHA 777 [7]2 years ago
8 0

Answer:

12

Step-by-step explanation:

Let's create a table

\left[\begin{array}{cc}boys&girls\\2&5\\2x&5x\end{array}\right]

2 : 5 is the same as 2x : 5x because you multiply both sides in 2:5 by x

If the ratio is 2x : 5x, what is the total?

2x + 5x = 7x

The total is 7x

However, we are given that there are 42 students

So, 7x = 42

x = 6

As we said earlier, boys = 2x

We know that x = 6, so 2x must equal to 12

There are 12 boys.

Hope this helps :)

Have a nice day!

AVprozaik [17]2 years ago
6 0

Answer:

What is the ratio of boys to girls in simplest form?

The ratio of boys : girls →4:5 so you have 4 boys and 5 girls making the whole count 4+5=9 in its simplest form. So to change the ratio proportion into fraction proportion we have: boys →49 of the whole

Step-by-step explanation:

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