Important Questions Test: Algebra - Class 6 MCQ

The number of cadets is determined by multiplying the number of rows by 4. So, if there are 4 cadets per row, the total number of cadets is calculated using this multiplication.

The total number of oranges can be calculated by multiplying the number of boxes (b) by the number of oranges per box (60).

Perimeter of an equilateral triangle

• Definition: An equilateral triangle is a triangle in which all three sides are equal in length.
• Given: Each side of the equilateral triangle is 'x' units.
• Perimeter Formula: The perimeter of any polygon is the sum of the lengths of its sides. For an equilateral triangle, the perimeter is the sum of all three sides.

Solution

• Since the given triangle is equilateral, all three sides are of equal length, which is 'x' units.
• Therefore, the perimeter P of the equilateral triangle is P = x + x + x = 3x units.
• Hence, the correct answer is 3x.

By following the formula for calculating the perimeter of an equilateral triangle and substituting the given value of 'x', we can easily determine that the correct answer is 3x units.

The total number of pens is found by multiplying the number of students (s) by 4 (the number of pens per student).

The distance flown by the bird is calculated by multiplying the time (t) by 2 kilometers per minute.

The total number of dots is calculated by multiplying the number of rows (7) by the number of dots in each row (8).

Since Leela is 3 years younger than Radha, her age can be expressed as Radha's age minus 3.

Step-by-step

Substitute the given values into the equation:

• x + 4 = 2
• x + 4 - 4 = 2 - 4
• x = -2

Therefore, the solution to the equation is x = -2

The total number of laddus is the sum of the ones given to the guests (12) and the ones kept by the mother (3). So, the original total number is 15.

The total number of items in the larger box is the sum of the items in the smaller box (x) and the 5 extra items.