Question

2. A positive number is 5 times another number. If 21 is added to both the numbers,
then one of the new numbers becomes twice the other new number. What are the
numbers?

3. Sum of the digits of a two-digit numberi s 9. When we interchange the digits, it is
found that the resulting new number is greater than the original number by 27. What
is the two-digit number?

4. One of the two digits of a two digit n am'oer is three times the other digit. If you
interchange the digits of this two-digit number and add the resulting number to the
original number, you get 88. What is the original number?

5. Shobo's mother's present age is six tir nes Shobo's present age. Shobo's age five
years from now will be one third of his mother's present age. What are their
present ages?



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Answer 1

Answer:

another number is 7

positive number is 35

Step-by-step explanation:

let the other number be x

Given that,

A positive number is 5 times that number

Therefore positive number is 5x

Now

21 added to both number

Therefore

Other number is X + 21

Positive number is 5x + 21

Given that

One of the new number becomes twice of the other number

5x + 21 = 2(x+21)

5x + 21 = 2x + 42

5x - 2 X + 21 = 42

3x + 21 = 42

3x = 42 - 21

3x = 21

x = 21/3

x = 7

Therefore

1. Another number is X = 7

2. Positive number is 5x = 5 multiply 7 = 35