There are 120 students in class 7. It is known that 2/3 out of them like Maths, out of which 35 are girls. Also, out of to

Question

There are 120 students in class 7. It is known that
2/3
out of them like Maths, out of which 35
are girls. Also, out of total students,
3/5
are boys. (3)
(a) What is the number of girls in the class?
(b) How many students like Maths?
(c) How many boys like Maths?

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Dâu 3 years 2021-08-31T18:45:14+00:00 2 Answers 2 views 0

Answers ( )

    0
    2021-08-31T18:46:18+00:00

    Multiply total students by 2/3 to find how many like math:

    Like math = 120 x 2/3 = 240/3 = 80 total students like math

    Multiply total students by 3/5 to find number of boys:

    120 x 3/5 = 360/5 = 72 boys

    A) number of girls = total students – boys = 120 -72 = 48 girls

    B) from above 80 students like math

    C) number of boys that like math = number of students that like math minus girls that like math: 80- 35 = 35 boys like math

    0
    2021-08-31T18:47:07+00:00

    72 boys xjtxkttkftkxktx

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