Advertisements
Advertisements
Question
Find a number whose one-third part exceeds its one-fifth part by 20.
Solution
Let the number = x
According to the condition
`1/3"x" - 1/5"x" = 20`
`=> ("5x - 3x")/15 = 20` ...(LCM of 3, and 5 = 15)
`=> "2x"/15 = 20`
`=> "x" = (20 xx 15)/2`
`=> "x" = 150`
∴ Number = 150
APPEARS IN
RELATED QUESTIONS
Solve the following equation:
(x - 5)(x + 3) = (x - 7)(x + 4)
Solve the following equation:
(x – 5)2 – (x + 2)2 = -2
Solve the following equation:
10 + 6a = 40
Solve the following equation:
3p – 1 = 8
Solve the following equation:
`7/10`x + 6 = 41
8y – 4y = 20
7 (x - 2) = 2 (2x - 4)
Solve: `(2"x" + 1)/("3x" - 2) = 1 1/4`
Solve the following equations for the unknown: `(2x + 3)/(x + 7) = (5)/(8), x ≠ -7`
Solve the following equations for the unknown: `(3x - 5)/(7x - 5) = (1)/(9), x ≠ (5)/(7)`
Solve the following equations: a(x - 2a) +b (x - 2b) = 4ab
The sum of three consecutive natural numbers is 216. Find the numbers
The sum of three consecutive odd natural numbers is 99. Find the numbers.
A man went to market at a speed of 4 km/h and returned at a speed of 3km/h. If he took 30 minutes more in returning, find the distance of the market from his home.
A tap can fill a tank in 12 hours while another tap can fill the same tank in x hours. Both the taps if opened together can fill the tank in 6 hours and 40 minutes. Find the time the second tap will take to fill the tank.
A man invested Rs. 35000, a part of it at 12% and the rest at 14%. If he received a total annual interest of Rs. 4460, how much did he invest at each rate?
The age of a man is three times the age of his son. After 10 years, the age of the man will be double that of his son. Find their present ages.
The perimeter of a rectangular field is 80m. If the breadth is increased by 2 m and the length is decreased by 2 m, the area of the field increases by 36m2.Find the length and breadth of the field.
A tap can fill a tank in 12 hrs while another tap can fill the same tank in x hours. Both the taps if opened together fill the tank in 6 hrs and 40 minutes. Find the time the second tap will take to fill the tank.
In a class there are a certain number of seats. If each student occupies one seat, 9 students remain standing and if 2 students occupy one seat, 7 seats are left empty. Find the number of seats in the class.
