Question

18. Sum of three consecutive even numbers is 30. Find the numbers.
19. Length of rectangle exceeds its breadth by 3 m. If the perimeter of the rectangle is
90 m, find the length and breadth of the rectangle.
2.
20. In a class of 49 students, the number of girls is th of the boys. Find the number of
boys in the class.
21. If - is subtracted from a number and the difference is multiplied by 6, the result i
3
15. Find the number.
Rekha is three years older than Anita. Five years ago Rekha's age was four time
Anita's age. Find the ages of Rekha and Anita.
23. The price of 2 tables and 3 chairs is * 340, but a table costs 20 more than the chai
Find the cost of each.
Important Points to Remember
An equation is a condition on a variable such that two expressions in the varial
should have equal value.​

Answer 1

Step-by-step explanation:

18)

let the three consecutive number be x,x+1,x+2

ACTQ

x+x+1+x+2=30

3x +3=30

3x=30-3

3x =27

x=27/3

x=9

Answer 2

I hope it is helpful for you.