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SAI International School
CLASS - VIII
Mathematics
CHAPTER-2: Linear Equation In one variable
(WorkSheet)- 4
SUBTOPIC : Some more applications
1 Amina thinks of a number and subtracts 5/2 from it. She multiplies the result by 8.
The result now obtained is 3 times the same number she thought of.
What is the number?
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 number is 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 number is three times the other digit. If you
interchange the digits of this two-digit number and addthe resulting number to the
original number, you get 88. What is the original number?
5 Shobo’s mother’s present age is six times 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 age?
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