The price of an LPG cylinder increases from Rs.688 to Rs.860. By what percent should consumption be reduced so that the expenditure on LPG cylinders does not change? (in %)

The sides of a quadrilateral are in the ratio 2 : 3 : 4 : 5 and its perimeter is 658 cm. Find the length of the smallest side (in cm).

Find the area of the equilateral triangle whose side is 108 cm. (In cm²)

Find the area of a rhombus whose diagonals are 103 cm and 104 cm. (in cm²)

If X = 0.72444444…, then find the fractional value of X.

Pen, Pencil, and Rubber in a box are in proportion to 3: 2: 1. If the price of each pen, pencil and rubber is Rs.3, Rs.2 and Rs.2, respectively, and the total amount spent on the entire box is Rs.675, then find the number of pens in the box.

Find out the difference between the total production of both companies in the given years.

The marked price of a book is Rs.4,600. A bookseller offers a 10% discount on it and still makes a profit of 20%. Find the cost price of the book (in rupees).

Find the value of X: √(90-x) = √(40 + √81)