The sum of two positive whole numbers is 15 and their difference is 9; the numbers are : 1. 12 and 3 2. 9 and 0 3. 7 and 8 4. 15 and 0

Let two whole numbers be x and y, where x y. Given, Sum of numbers = 15 ⇒ x + y = 15 .........(1) Difference of numbers = 9 ⇒ x - y = 9 .........(2) Adding equation (1) and (2), we get : ⇒ (x + y) + (x - y) = 15 + 9 ⇒ x + x + y - y = 24 ⇒ 2x = 24 ⇒ x = = 12. Substituting value of x in equation (1), we get : ⇒ 12 + y = 15 ⇒ y = 15 - 12 = 3. Hence, Option 1 is the correct option.

The sum of the digits of a two digit number is 8. The difference between them is 4. If the ten's digit is greater than the unit's digit then the number is :
26
53
71
62

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Mathematics

The sum of two positive whole numbers is 15 and their difference is 9; the numbers are :
12 and 3
9 and 0
7 and 8
15 and 0

Linear Equations

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The sum of the digits of a two digit number is 8. The difference between them is 4. If the ten's digit is greater than the unit's digit then the number is :
26
53
71
62

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The sum of two positive whole numbers is 15 and their difference is 9; the numbers are :12 and 39 and 07 and 815 and 0

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The sum of the digits of a two digit number is 8. The difference between them is 4. If the ten's digit is greater than the unit's digit then the number is :26537162

The sum of two positive whole numbers is 15 and their difference is 9; the numbers are :
12 and 3
9 and 0
7 and 8
15 and 0

The sum of the digits of a two digit number is 8. The difference between them is 4. If the ten's digit is greater than the unit's digit then the number is :
26
53
71
62