Explanation

This is an inverse proportion problem.

Formula:

Given:

• Men₁ = 39
• Days₁ = 29
• Men₂ = 29
• Days₂ = ?

Last updated 18-07-2026 by NA

Explanation

The clock loses 5 minutes every hour.

In 2 actual hours, it loses 10 minutes.

Actual time = 2:00 PM, so the clock shows 1:50 PM.

Verified & Updated

Explanation

A : B = 70 : 46, and B : C = 70 : 40.

Therefore, A : C = 245 : 92.

When A finishes 70 m, C covers 26.29 m.

So, A beats C by 70 − 26.29 = 43.71 m (≈ 44 m).

Verified & Updated

Explanation

The increase from 1/2 to 3/4 is 1/4 of the tank.

So,

1/4 of the tank = 30 liters

Full capacity = 30 × 4 = 120 liters

Last verified on 11-07-2026

Explanation

Average speed ≠ average of speeds when distances are equal.  

Use: Average speed = Total distance / Total time

Total distance = 60 + 60 = 120 km

Time for 1st part = 60 km / 60 km/h = 1 hour  

Time for 2nd part = 60 km / 120 km/h = 0.5 hour  

Total time = 1 + 0.5 = 1.5 hours

Average speed = 120 / 1.5 = 80 km/h.

Last verified on 13-06-2026

Explanation

Formula: Distance = Speed × Time

= 60 × 3

= 180 km

Last verified on 11-06-2026

Explanation

Time for first part = 60 ÷ 40 = 1.5 h

Time for return = 60 ÷ 60 = 1 h

Total distance = 120 km

Total time = 2.5 h

Average speed = 120 ÷ 2.5 = 48 km/h

Last verified on 13-05-2026

Explanation

This is a distance problem using the Pythagorean theorem.

A person moves:

• 80 km North
• 60 km West

These form a right triangle.

Distance from starting point:

d=  √(80^2 + 60^2)

=√(6400 + 3600)

= √(10000) 

= 100 km

Last updated question by NS on 2 MAY 2026

Explanation

Step 1: Convert time into hours

1 hour 30 minutes = $1.5$ hours

Step 2: Use the formula

Speed=Distance/Time​

Step 3: Calculate

Speed=60/1.5​=40 km/h

Last updated by NA on 23-April-2026

Explanation

Given:

Distance = 60 km
Time = 1 hour

Formula:

Speed= Distance/Time

​

Calculation:

Speed=60/1​=60 km/h