Explanation

If wheat = 100

Then sugar = 100% more = 100 + 100 = 200

So sugar : wheat = 200 : 100 = 2 : 1

Last verified on 11-04-2026

Explanation

Red : Blue = 3 : 2

If 3 parts = 21 red marbles  

Then 1 part = 21 ÷ 3 = 7

So blue = 2 parts = 2 × 7 = 14

Last verified on 11-04-2026

Explanation

If 20% = 120

Then 100% = 120 ÷ 0.20 = 600

Last verified on 11-04-2026

Explanation

You ate 4 slices, so 6 slices left.

6/10 × 100 = 60%

Last verified on 11-04-2026

Explanation

• The smallest common multiple of given numbers is called LCM.
• LCM stands for Least Common Multiple.
• It is the smallest number divisible by all given numbers.
• Used in fractions and number problems.

Last verified on 11-04-2026

Explanation

• A simple refracting telescope uses lenses to view distant objects.
• It has two convex lenses: objective lens and eyepiece.
• The objective lens forms a real image.
• The eyepiece magnifies the image for viewing.

Last verified on 11-04-2026

Explanation

• Bohr’s model describes atom structure.
• Electrons revolve around nucleus in fixed paths.
• These paths are called stationary circular orbits.
• Each orbit has fixed energy level.

Last verified on 11-04-2026

Explanation

• Celsius and Fahrenheit are two temperature scales.
• At one special point, both scales show the same value.
• This happens when temperature is −40.
• So, −40°C = −40°F.

Last verified on 11-04-2026

Explanation

• Energy due to motion is called kinetic energy.
• Any moving object possesses this energy.
• It depends on mass and velocity of the body.
• Faster motion means more kinetic energy.

Last verified on 11-04-2026

Explanation

Binary system uses only 0 and 1

0 + 0 = 0

0 + 1 = 1

1 + 1 = 10 (carry 1)

Last verified 11-04-2026