SYSTEMS OF EQUATIONS WORD PROBLEMS WORKSHEET

Problem 1 :

Sum of two numbers is 50 and their difference is 10, then the numbers are

(a) 30 and 20     (b) 24 and 14

(c) 12 and 2     (d) none of these

Solution

Problem 2 :

The sum of the digits of a two-digit number is 12. The number obtained by interchanging its digit exceeds the given number by 18, then the number is

(a) 72     (b) 75     (c) 57     (d) none of these

Solution

Problem 3 :

The sum of a two-digit number and the number obtained by interchanging its digit is 99. If the digits differ by 3, then the number is

(a) 36     (b) 33     (c) 66     (d) none of these

Solution

Problem 4 :

Seven times a two-digit number is equal to four times the number obtained by reversing the order of its digit. If the difference between the digits is 3, then find the number.

(a) 36     (b) 33     (c) 66     (d) none of these

Solution

Problem 5 :

A two-digit number is 4 more than 6 times the sum of its digit. If 18 is subtracted from the number, the digits are reversed. Find the number.

(a) 36     (b) 46     (c) 64     (d) none of these

Solution

Problem 6 :

The sum of two numbers is 1000 and the difference between their squares is 256000, then find the numbers.

(a) 616 and 384     (b) 628 and 372

(c) 564 and 436     (d) none of these

Solution

Problem 7 :

Five years ago, A was thrice as old as B and ten years later A shall be twice as old as B, then the present age of A is

(a) 20     (b) 50     (c) 30     (d) none of these

Solution

Problem 8 :

The sum of thrice the first and the second is 142 and four times the first exceeds the second by 138, then the numbers are

(a) 40 and 20     (b) 40 and 22

(c) 12 and 22     (d) none of these

Solution

Problem 9 :

The sum of twice the first and thrice the second is 92 and four times the first exceeds seven times the second by 2, then find the numbers.

(a) 25 and 20     (b) 25 and 14

(c) 14 and 22     (d) none of these

Solution

Problem 10 :

The difference between two numbers is 14 and the difference between their squares is 448, then find the numbers.

(a) 25 and 9     (b) 22 and 9

(c) 23 and 9     (d) none of these

Solution

Answer Key

1) The two numbers are 30 and 20.

2)  The required number is 57.

3)  The required number is 63 or 36.

4)  36

5)  The number is 64.

6)  x = 628, y = 372

7)  The age of person A is 50.

8)  The numbers are 40 and 22.

9)  The numbers are 25 and 14.

10)  The numbers are 23 and 9.

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