Question

In the Annual Day programme, rd

1/3



of the total students of class VIII have

participated in the dance, out of which th

1/4



were boys. If the total number of

boys is 50, answer the following (choose the correct option).

i] Find the total no. of students.

a) 500 b) 600 c) 400 d) none of these​

Answer 1

Answer:

To find: multiplicative inverse. Solution: a multiplicative inverse is basically a reciprocal. Multiplicative inverse of number is the number which if multiplied by original number result in 1. 1/16 ÷ 1/81 + -1/8. 1/16 ÷ 1/81 = 81/16 + - 1/8 = - 1/8. 81/16 - 1/8 = 81/16 - 2/16 = (81 - 2)/16 = 79/16. Multiplicative inverse = 16/79

Step-by-step explanation:

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Answer 2

Answer:

Let the number of boys and girls participating in sports be 3x and 2x respectively.

Then, 3x = 15 or x = 5.

So, number of girls participating in sports = 2x = 10.

Number of students not participating in sports = 60 - (15 + 10) = 35.

Let number of boys not participating in sports be y.

Then, number of girls not participating in sports = (35 -y).

Therefore (35 - y) = y + 5 ⇔⇔ y = 15.

So, number of girls not participating in sports = (35 - 15) = 20.

Hence, total number of girls in the class = (10 + 20) = 30.