A number consisting of two digits is seven times

Asked by admin @ in Math viewed by 99 People

A number consisting of a two digit number is 7 times the sum of its digit. when 27 is subtracted from the number the digits are reversed .find the number

Given : a number consisting of two digits is 7 times the sum of its digits. when 27 is subtracted from the number the digits are reversed.

To find : the number.

As the number is a two digit , then let x be tens's place and y be one's place.

Therefore the two digit number would form as 10 x +y

according to the question,

a number consisting of two digits is 7 times the sum of its digits.

=> 10 x + y = 7( x+y)

=> 3x-6y=0

=> x = 2y ............(1)

when 27 is subtracted from the number the digits are reversed.

After reversing the digits, the number = 10 y +x

=> (10 x+ y )- 27 = 10y + x

=> 9 x- 9y = 27

=>x -y = 3 ...............(2)

Substituting the value of x from eq (1) to eq(2) , we get

=> 2y-y = 3

=> y = 3

x= 2y

=> x = 2(3) = 6

Therefore the number is =  10 (6) + 3 = 63

Answer : the required two digit number is 63

A two digit number is 4 times the sum

Asked by admin @ in Math viewed by 125 persons

A two digit number is 4 times the sum of its digits and twice the product of its digits.Find the number.

When 5 times the larger of the two numbers

Asked by admin @ in Math viewed by 139 persons

when 5 times the larger of the number is divided by the smaller, the quotient and remainder are 2 and 9 respectively. form a linear equations in two variables. write …

Lcm of two numbers is 14 times their hcf

Asked by admin @ in Math viewed by 130 persons

The lcm of two numbers is 14 times their hcf. the sum of lcm and hcf is 600. if one number is 280,then find other number

Lcm of two numbers is 45 times their hcf

Asked by admin @ in Math viewed by 138 persons

LCM of two numbers is 45 times their HCF if one of the numbers is 125 and sum of their HCF and LCM is 1150 find the other number

The digits of two digit number differ by 3

Asked by admin @ in Math viewed by 107 persons

The digits of a two-digit number differ by 3. If the digits are interchanged, and the resulting number is added to the original number, we get 143. What can be …

A 4 digit number uses only two different digits

Asked by maham237 @ in Mathematics viewed by 99 persons

A 3-digit number uses only two different digits.

The sum of two digit number is 9

Asked by admin @ in Math viewed by 131 persons

The sum of digits of a two-digit number is 9.Also,nine times this number is twice the number obtained by reversing the order of the digits.Find the number.

The sum of the two digit number is 12

Asked by admin @ in Math viewed by 101 persons

The sum of the digit of two digit number is 12. The number obtained by interchanging the digits exceeds the given number by 18. Find the number

The sum of a two digit number is 12

Asked by admin @ in Math viewed by 169 persons

The sum of the digit of two digit number is 12. The number obtained by interchanging the digits exceeds the given number by 18. Find the number

If a two digit number is chosen at random

Asked by admin @ in Math viewed by 89 persons

If a two digit number is chosen at random, then the probability that the number chosen is a multiple of 3, is

How many two digit numbers are there in all

Asked by admin @ in Math viewed by 163 persons

How many 2-digit numbers are there in all?

The sum of a two digit number is 9

Asked by admin @ in Math viewed by 144 persons

The sum of digits of a two-digit number is 9.Also,nine times this number is twice the number obtained by reversing the order of the digits.Find the number.

How many seven digit numbers are there in all

Asked by admin @ in Math viewed by 106 persons

How many 7 digit numbers are there in all?​

The sum of the two digit number is 9

Asked by admin @ in Math viewed by 97 persons

The sum of digits of a two-digit number is 9.Also,nine times this number is twice the number obtained by reversing the order of the digits.Find the number.

A two digit number is such that the product

Asked by admin @ in Math viewed by 82 persons

a two digit number is such that the product of its digits is 18.when 63 is subtracted from the number,the digits interchange their places.find the number.

Shubham is facing south and moves 30 km

Asked by admin @ in Math viewed by 10905 persons

Survey of various types of bank accounts icse project

Asked by admin @ in Math viewed by 9667 persons

The town of p is located at point x

Asked by admin @ in Math viewed by 9493 persons

A clock gains 4 minutes after every 4 minutes

Asked by admin @ in Math viewed by 8350 persons

Paul is sixteenth from the front of the row

Asked by admin @ in Math viewed by 7673 persons

Oxford new enjoying mathematics class 7 solutions chapter 1

Asked by admin @ in Math viewed by 6975 persons

Running a tuck shop or canteen maths project pdf

Asked by admin @ in Math viewed by 6837 persons

What is the value of x in the expression

Asked by admin @ in Math viewed by 6582 persons

The average weight of 20 teachers is 80 kg

Asked by admin @ in Math viewed by 5741 persons

In a row of friends tiya occupies fifteenth place

Asked by admin @ in Math viewed by 5264 persons

The number 567 xy is completely divisible by 30

Asked by admin @ in Math viewed by 4751 persons

Consider a 3 digit integer x with distinct digits

Asked by admin @ in Math viewed by 3883 persons

Prachi excellence in mathematics class 7 solutions pdf free download

Asked by admin @ in Math viewed by 3528 persons

What would \$ mean if fat is coded as

Asked by admin @ in Math viewed by 3463 persons

Five friends are sitting in a row facing north

Asked by admin @ in Math viewed by 3347 persons