English

Solve the Following Equation: 5/8 "N" = 20 - Mathematics

Advertisements
Advertisements

Question

Solve the following equation:

`5/8 "n" = 20`

Sum

Solution

`5/8 "n" = 20`

⇒ 5n = 20 × 8 = 160

⇒ n = `160/5 = 32`

∴ n = 32

shaalaa.com
Simple Linear Equations in One Variable
  Is there an error in this question or solution?
Chapter 12: Simple Linear Equations (Including Word Problems) - Exercise 12 (A)

APPEARS IN

Selina Concise Mathematics [English] Class 7 ICSE
Chapter 12 Simple Linear Equations (Including Word Problems)
Exercise 12 (A) | Q 26

RELATED QUESTIONS

Solve the following equation:

`"3x"/4 - 1/4("x" - 20) = "x"/4 + 32`


Solve the following equation:

(x - 1 )(x + 6) - (x - 2)(x - 3) = 3


Solve the following equation:

2x = 0


Solve the following equation:

`"a"/15 - 2 = 0`


8y – 4y = 20


Solve: `1/2"m" + 3/4"m" - "m" = 2.5`


A number is as much greater than 35 as is less than 53. Find the number.


The length of a rectangular plot exceeds its breadth by 5 m. If the perimeter of the plot is 142 m, find the length and the breadth of the plot.


A man is thrice as old as his son. After 12 years, he will be twice as old as his son at that time. Find their present ages.


A sum of ₹ 500 is in the form of notes of denominations of ₹ 5 and ₹ 10. If the total number of notes is 90, find the number of notes of each type.


Solve the following equations for the unknown: `(x + 13)/(x^2 - 1) + (5)/(x + 1) = (7)/(x + 1)`


Solve the following equations for the unknown: `7 - (1)/sqrt(y)` = 0


In a two digit number, the ratio of the digits at the unit's place and the ten's place is 3:2. If the digits are reversed, the resulting number is 27 more than the original number. Find the two digit number.


If a boy walks to his school at a speed of 4km/h, he reaches the school 10 minutes before time. If he walks at 3km/h, he reaches the school 10 minutes late. Find the distance between his house and school.


The length of a rectangle is 30 cm more than its breadth. The perimeter of the rectangle is 180 cm. Find the length and the breadth of the rectangle.


What number decreased by 12% of itself gives 1584?


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 an election there were two candidates. A total of 9791 votes were polled. 116 votes were declared invalid. The successful candidate got 5 votes for every 4 votes his opponent had. By what margin did the successful candidate win?


A 90 kg solution has 10% salt. How much water must be evaporated to have the solution with 20% salt?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×