Question

1.Find a number, such that one - fourth of the number is 3 more than 7.
2.The sum of two numbers is 80 and the greater number exceeds twice the smaller by 11. Find the numbers.
3.Find three consecutive odd natural numbers whose sum is 87.
4. In a class of 35 students, the number of girls is two-fifth of the number of boys. Find the number of girls in the class.
do the sums with workings

Answer 1

Answer:

1. 40

2. 23,57

3. 27

4. 25

Step-by-step explanation:

1. x/4 = 3+7

or, x = 10*4

2. x+y = 80 (i)

x - 2y = 11 (ii)

(i)-(ii)

y = 23

x = 57

3. x+x+2+x+4 = 87

or, 3x = 81

or, x = 27

4. 35= x + 2x/5

or, 175 = 7x

or, x = 25

:)