Welcome to cbsenotes.com! To post messages or access any member only section, you will need an account. Create your free account now.
Already a member ? Click here to login
CBSE Notes 2011-2012 » XI-Maths

Linear Inequalities

The marks obtained by a student in two tests were 70 and 75. Find the number of minimum marks he sho...

Short answer question

The marks obtained by a student in two tests were 70 and 75. Find the number of minimum marks he should get in the third test to have an average of at least 60 marks. [NCERT]

The longest side of a triangle is three times the shortest side and third side is 2 cm shorter than ...

Short answer question

The longest side of a triangle is three times the shortest side and third side is 2 cm shorter than the longest side. If the perimeter of triangle is at least 61 cm. Find the minimum length of the shortest side.

A solution of 8% basic acid is to be diluted by adding 2% boric solution to it. The resulting mixtur...

Short answer question

A solution of 8% basic acid is to be diluted by adding 2% boric solution to it. The resulting mixture is to be more than 4% but less than 6% basic acid. If we have 640 litres of the 8% solution, how many litres of the 2% solution will have to be added.

A plumber can be paid under two schemes as given below : Scheme I : Rs. 600 and Rs. 50 per hour. Sch...

Short answer question

A plumber can be paid under two schemes as given below :
Scheme I : Rs. 600 and Rs. 50 per hour.
Scheme II: Rs. 170 per hour.
If the job takes x hours, for what values of x does the scheme I give the plumber the better wages ?

A manufacturer has 600 litres of a 12% solution of acid. How many litres of a 30% acid solution must...

Short answer question

A manufacturer has 600 litres of a 12% solution of acid. How many litres of a 30% acid solution must be added to it so that acid content in the resulting mixture will be more than 15% but less than 18% ?

Find all pairs of consecutive odd natural numbers both of which are greater than 10, such that their...

Short answer question

Find all pairs of consecutive odd natural numbers both of which are greater than 10, such that their sum is less than 40. {NCERT]

Syndicate content