Question

1. If 7 is added to five times a number, the result is 57. Find the number.
2. Find a number, such that one-fourth of the number is 3 more than 7.
3. A number is as much greater than 15 as it is less than 51. Find the number
is subtracted from a number and the difference is multiplied by 4, the result
5. The sum of two numbers is 80 and the greater number exceeds twice the smaller
7. In a class of 35 students, the number of girls is two-fifth of the number of boys.
8. A chair costs 250 and a table costs 400. If a housewife purchased a certain merber
of chairs and two tables for 2800, find the number of chairs she purchased
9. Aparna got 27840 as her monthly salary and over-time. Her salary exceeds the
Hint. Let Aparna's monthly salary bex, then payment for over-time=3(2-1655).
Exercise 6.2
4. If
is 5. What is the number?
by 11. Find the numbers.
6. Find three consecutive odd natural numbers whose sum is 87.
Find the number of girls in the class.
over-time by 16560. What is her monthly salary?
According to problem, x + x – 16560 = 27840.
10. Heena has only 32 and 5 coins in her purse. If in all she has 80 coins in her perse
amounting to 232, find the number of 5 coins.
11. A purse contains 550 in notes of denominations of 710 and 50. If the number of
350 notes is one less than that of 10 notes, then find the number of 750 notes
12. After 12 years, I shall be 3 times as old as I was 4 years ago. Find my present
age.
13. Two equal sides of an isosceles triangle are (3x – 1) units and (2x + 2) units. The
third side is 2x units. Find x and the perimeter of the triangle.
14. The length of a rectangular plot is 6 m less than thrice its breadth. Find the
dimensions of the plot if its perimeter is 148 m.
15. Two complementary angles differ by 20°. Find the measure of each angle​

Answer 1

let no- bex

едиапо

equation in

5x+7=57

o sx = 5x1=50

ori 1-50 の 11 10

82 50, No. TO