Home › UP Board Class 10 › Mathematics › Linear Equations › The sum of two numbers is 25 and their differenc…
The sum of two numbers is 25 and their difference is 5. Find them.
A18 and 7
B15 and 10
C20 and 5
D12 and 13
Answer & Solution
Correct answer: B. 15 and 10
Let the numbers be x and y. x + y = 25 and x − y = 5. Add: 2x = 30 ⇒ x = 15, y = 10.
Related questions
When variables and numbers appear on both sides, you must simplify:Equations needing more than one operation are described as taking more:Once a solution is found, it should be checked by substituting it back to get a statement The product of any number and its reciprocal equals:A fraction multiplying the variable is best removed by multiplying by its:Solving x divided by 4 equals 3 gives x equal to:Solving 4x equals 20 gives x equal to:Solving x minus 8 equals 5 gives x equal to: