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Hatshy [7]
2 years ago
11

the ratio of boys to girls in a school is 4:5 there are 22o boys in the school. How many students attend the school​

Mathematics
2 answers:
stepladder [879]2 years ago
8 0

Answer:

495 students

Step-by-step explanation:

The 4 part of the ratio is the number of boys.

Divide the number of boys by 4 to find the value of one part of the ratio.

220 ÷ 4 = 55 ← value of 1 part of the ratio, thus

5 parts = 5 × 55 = 275 ← number of girls

Number of students = 220 + 275 = 495

vodka [1.7K]2 years ago
8 0

Answer:

<h2>495 students</h2>

Step-by-step explanation:

220 \: boys \\  4:5 = 4 + 5 \\ boys \:  =  \frac{4}{9}  \times x = 220 \\  =  \frac{4x}{9}  =  \frac{220}{1}

4x = 1980 \\  \frac{4x}{4}  =  \frac{1980}{4}  \\ x = 495 \\ total \: no \: of \: students \:  = 495 \\

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Step-by-step explanation:

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