Advertisements
Advertisements
प्रश्न
Six more than one-fourth of a number is two-fifth of the number. Find the number.
Advertisements
उत्तर
Let the required number = x
∴ One-fourth of the number = `"x"/4`
Two-fifth of the number = `"2x"/5`
According to the statement:
`"2x"/5 = 6 + "x"/4`
`=> "2x"/5 - "x"/ = 6/1`
`=> "2x"/5 xx 20 - "x"/4 xx 20 = 6 xx 20`
....[Multiplying each term by 20 because L.C.M. of 5,4 and 1 = 20]
⇒ 8x- 5x = 120
⇒ 3x = 120
⇒ x = `120/3`
x = 40
Required number = 40
APPEARS IN
संबंधित प्रश्न
Solve the following equation:
20 = 6 + 2x
The length of a rectangle is twice its width. If its perimeter is 54 cm; find its length.
A man completed a trip of 136 km in 8 hours. Some part of the trip was covered at 15 km/hr and the remaining at 18 km/hr. Find the part of the trip covered at 18 km/hr.
Solve:
`1/10 - 7/x = 35`
Solve: `("x" + 2)/3 - ("x" + 1)/5 = ("x" - 3)/4 - 1`
Solve: `("6x" + 1)/2 + 1 = ("7x" - 3)/3`
The sum of two numbers is 405 and their ratio is 8 : 7. Find the numbers.
Given that x ≥ y. Fill in the blank with suitable inequality sign
x – y `square` 0
Solve the following inequation
x – 6 < 1, where x is a natural number
Solve the following inequation
4x – 9 > – 33, where x is a negative integer
