The cost of an article has increased from Rs 450 to Rs 495. What is the increase percent?

which one of the following is one of the factor  pair of 12:

if the angle is less than 90. Than it is called _______ angle:

subtract the sum of -40 and 80 from the sum of -30 and 60:

Find the value of the given expression :
2a + 3b -4c +5d
Where a=2 , b=3 , c=4 ,d =5

Marine spent 524 Rs for books, each book was of 65.5 Rs . Find the no of books she bought:

Find the difference between the place value of 6 in 116960:

Find the distance between two points A(10,8) and B(18,13)

Solve the equation :
11/5 + 12/5 + 31/5

Choose the best type of graph:

Rewrite (7.7.7.7 + 5.5.5 -3.3.3) in simplest form using exponents:

Sometimes if the power is not one, we have to be careful while adding that.

Solve the equation:
(11/5 + 12/5 )*20  + (20/3 + 10/3)*9

Find the value of x in the given equation:
(12x - 40 )*2 = 2x+ (4/2)

Point A and Point B are 60 m apart. Point B and Point C are 150 m apart. Ben ran from Point A to Point B in 3 seconds.
Then, he runs from Point B to Point C in 11 seconds. Find Ben’s average speed for the distance from Point A to Point C.

priya bought 2/3kg potato, 4/3 kg onion and 5/3kg tomato. She paid 50Rs per kg . Find the total amount she paid.

Find the least no. of students in a class such that they stand in rows of 15, 20, 25 and form a perfect square.