Advertisements
Advertisements
प्रश्न
Set up equation and solve them to find the unknown number in the following case:
Anwar thinks of a number. If he takes away 7 from `5/2` of the number, the result is 23.
Advertisements
उत्तर
Let the number be x
`5/2` of this number = `(5x)/2`
`(5x)/2 - 7 = 23`
`(5x)/2 = 23 + 7` ...(Transposing -7 to R.H.S)
`(5x)/2 = 30`
Multiplying both sides by 2,
`(5x xx 2)/2`
= 30 × 2
5x = 60
Dividing both sides by 5,
`(5x)/5 = 60/5`
x = 12
APPEARS IN
संबंधित प्रश्न
Laxmi’s father is 49 years old. He is 4 years older than three times Laxmi’s age. What is Laxmi’s age?
Raju’s father’s age is 5 years more than three times Raju’s age. Find Raju’s age, if his father is 44 years old.
In a test Abha gets twice the marks as that of Palak. Two times Abha's marks and three times Palak's marks make 280.
Marks obtained by Abha are ______.
In a bag there are 5 and 2 rupee coins. If they are equal in number and their worth is ₹ 70, then
The worth of x coins of ₹ 2 each ______.
In a Mathematics quiz, 30 prizes consisting of 1st and 2nd prizes only are to be given. 1st and 2nd prizes are worth ₹ 2000 and ₹ 1000, respectively. If the total prize money is ₹ 52,000 then show that:
The total value of prizes in terms of x are ______.
The sum of twice a number and 4 is 18.
Subramaniam and Naidu donate some money in a Relief Fund. The amount paid by Naidu is ₹ 125 more than that of Subramaniam. If the total money paid by them is ₹ 975, find the amount of money donated by Subramaniam.
The sum of three consecutive integers is 5 more than the smallest of the integers. Find the integers.
A number when divided by 6 gives the quotient 6. What is the number?
In a class of 60 students, the number of girls is one-third the number of boys. Find the number of girls and boys in the class.
