MEDIUM
10th CBSE
IMPORTANT
Earn 100

One year ago, a man was 8 times as old as his son. Now his age is equal to the square of his son's age find their present age.

Important Questions on Quadratic Equations

MEDIUM
10th CBSE
IMPORTANT
Modern's abc+ of Mathematics for Class 10>Chapter 4 - Quadratic Equations>EXERCISE>Q 2
The sum of the age of a man his son is 45 years. Five years ago, the product of their ages was four times the man's age at that time. Find their present ages.
MEDIUM
10th CBSE
IMPORTANT
Modern's abc+ of Mathematics for Class 10>Chapter 4 - Quadratic Equations>EXERCISE>Q 3
A girl is twice as old her sister. Four years hence, the product of their ages (in years) will be 160. Find their present ages.
MEDIUM
10th CBSE
IMPORTANT
Modern's abc+ of Mathematics for Class 10>Chapter 4 - Quadratic Equations>EXERCISE>Q 4

The difference of a father's age and his son's age is 21 years and twelfth part of the product of their ages is less the father's age by 18 years. Find their ages.

MEDIUM
10th CBSE
IMPORTANT
Modern's abc+ of Mathematics for Class 10>Chapter 4 - Quadratic Equations>EXERCISE>Q 5
Arun is k years old while his mother's Mrs. Khanna is k2 years old. 5 years hence, Mrs. Khanna will be three times as old as Arun. Find their present ages.
MEDIUM
10th CBSE
IMPORTANT
Modern's abc+ of Mathematics for Class 10>Chapter 4 - Quadratic Equations>EXERCISE>Q 6
The sum of the ages of a boy and his brother is 25 years, and the product of their ages in years is 126. Find their ages.
MEDIUM
10th CBSE
IMPORTANT
Modern's abc+ of Mathematics for Class 10>Chapter 4 - Quadratic Equations>EXERCISE>Q 7
The product of Reena's age (in years) 5 years ago and her age 8 years later is 30. Find her present age.
MEDIUM
10th CBSE
IMPORTANT
Modern's abc+ of Mathematics for Class 10>Chapter 4 - Quadratic Equations>EXERCISE>Q 1

The speed of a boat in still water is 8 km/h. It can go 15 km upstream and 22 km downstream in 5 hours. If the speed of the stream is k km/h, then find the value of k.

MEDIUM
10th CBSE
IMPORTANT
Modern's abc+ of Mathematics for Class 10>Chapter 4 - Quadratic Equations>EXERCISE>Q 2
A passenger train takes 2 hours less for a journey of 300 km, if its speed is increased by 5 km/h from its usual speed. If its usual speed is k km/h, then find the value of k.