3 years ago

3/7 of the students in a school are girls. If there are 64 boys find how many girls there are

Mathematics

2 answers:

Natasha_Volkova [10]3 years ago

3 0

Answer:

About 28

Step-by-step explanation:

Sergio [31]3 years ago

3 0

Answer:90

Step-by-step explanation:Hi.

Here is your answer---

Let the number of Students in a school be x.

Thus,Number of Girls = 3/7 of the total Students

= 3/7 of x

= 3x/7

We know,

Number of Boys + Number of Girls = Total Students.

64 + 3x/7 = x

64 = x - 3x/7

64 = (7x - 3x) /7 [Taking L.C.M.]

64 × 7 = 4x

x = 60 × 7

x = 420

Total number of Students in a school is 420.

Thus, Number of Girls = 3/7 × x

= 3/7 × 420

= 90

Thus, the number of Girls in a school is 90.

______________________

Hope it helps.

Have a nice day.

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