Home › ICSE Class 8 › mathematics › Linear Equations in One Variable › The sum of two consecutive natural numbers is 25…
The sum of two consecutive natural numbers is 25. The smaller number is
A12
B13
C10
D11
Answer & Solution
Correct answer: A. 12
1. Let the smaller number be x; the next is x + 1.
2. Equation: x + (x + 1) = 25, so 2 x = 24.
3. x = 12, so smaller number = 12.
4. Larger number = 13.
_Source: Selina Concise Mathematics Class 8, Ch 18 Linear Equations in One Variable (Mistral OCR'd PDF), section on word problems_
Related questions
Solve: 4(x - 1) - 2(x + 3) = 6. The value of x isSolve: 2 x + 3(x - 1) = 17. The value of x isThe perimeter of a rectangle is 36 cm. Length is 4 cm more than breadth. The breadth isSolve: 0.4 x + 0.6 = 1.4. The value of x isTwo numbers are in the ratio 3:5. If 5 is added to each, the ratio becomes 2:3. The largerThe present age of father is three times the son's age. After 10 years the father will be The denominator of a fraction is 4 more than the numerator. If 5 is added to both, the fraThree times a number reduced by 5 equals 16. The number is