Quantitative Aptitude - Arithmetic Ability Questions

What is the LCM (least common multiple) of 57 and 93?

There are 90 coins, comprising of 5 and 10 paisa coins. The value of all the coins is Rs. 7. How many 5 paisa coins are there?

From a square plate with each side 7 cm, squares of area 0.25 sq. cm are cut out at each corner and the remaining plate is folded along the cuts to form a cuboid. The volume of this open-top cuboid will be ......... . cub.cm

The perimeter of an isosceles triangle is 32 cm and each of the equal sides is 5/6 times of the base. What is the area (in cm2 ) of the triangle ?

In each question two equations numbered I and II are given,you haveto solve both the equation and choose the correctanswer.

$$\begin{gathered} I. 5x2+ 28x = -15 \\ II. 3y2+ 11y + 6 = 0 \end{gathered}$$

A student multiplied a number by 3/10 instead of 10/3. What is the percentage error in the calculation?

Selling price of an article is Rs 1144. If loss percentage is 12%, then what is the cost price (in Rs) of article?

When a discount of 20% is given on a lunch buffet, the profit is 42%. If the discount is 15%, then the profit is