HARD
10th CBSE
IMPORTANT
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A dealer sells an article for ₹24 and gains as much percent as the cost price of the article. Find the cost of the article.

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Important Questions on Quadratic Equations

HARD
10th CBSE
IMPORTANT
New Mathematics for Class X>Chapter 4 - Quadratic Equations>EXERCISE>Q 45
A dealer sells a book for ₹24 and loses as much percent as the cost of book. Find the cost of book.
HARD
10th CBSE
IMPORTANT
New Mathematics for Class X>Chapter 4 - Quadratic Equations>EXERCISE>Q 46
Some students planned a picnic. The budget for food was ₹480 . But, eight of these failed to go and thus, the cost of food for each member increased by ₹10 . How many students attended the picnic?
HARD
10th CBSE
IMPORTANT
New Mathematics for Class X>Chapter 4 - Quadratic Equations>EXERCISE>Q 47
A piece of cloth costs ₹35 . If the piece were 4 m longer and each metre costs ₹ one less, the cost would remain unchanged. How long is the piece?
HARD
10th CBSE
IMPORTANT
New Mathematics for Class X>Chapter 4 - Quadratic Equations>EXERCISE>Q 48
The perimeter of a right-angled triangle is 70 units and its hypotenuse is 29 units. Find the lengths of the other sides.
HARD
10th CBSE
IMPORTANT
New Mathematics for Class X>Chapter 4 - Quadratic Equations>EXERCISE>Q 49
The age of father exceeds to the square of the age of his son by 4 years. The sum of the age of father and four times the age of his son is 64 years. Find their ages.
HARD
10th CBSE
IMPORTANT
New Mathematics for Class X>Chapter 4 - Quadratic Equations>EXERCISE>Q 50
A takes 5 days less than the time taken by B to finish a piece of work. If both A and B together can finish the work in 103 days. Find the time taken by A and B to finish the work.
MEDIUM
10th CBSE
IMPORTANT
New Mathematics for Class X>Chapter 4 - Quadratic Equations>REVISION EXERCISE>Q 1
The roots of the equation x2-3x-x+3=0 are
MEDIUM
10th CBSE
IMPORTANT
New Mathematics for Class X>Chapter 4 - Quadratic Equations>REVISION EXERCISE>Q 2
If r=3 is a root of quadratic equation kr2-kr-3=0 then the value of k is