Explanation

Step 1: Find the cost of 1 apple

75/5​=15

Cost of 1 apple = Rs. 15

Step 2: Find the cost of 8 apples

$$8\times 15=120$$

Explanation

Step 1: Find 25% of 200

$$25\%\text{ of }200=$$25/ 100​×200=50

Step 2: Add an increase to the original value

$$200+50=250$$

$$Last\; updated\; by\; NA\; on\; 22-April-2026$$

Explanation

The direction opposite of East is West.

It is one of the four cardinal compass directions

While East is the direction of sunrise (approx. 90), West is the direction of sunset (approx. 270)

Last updated by NA on 22-April-2026

Explanation

If Ali is walking North and turns right, his direction will be East. 

When facing North, a 90-degree turn to the right aligns with the East direction on a compass. 

Last updated by NA on 22-April-2026

Explanation

Given:

Total students = 1500
Present students = 1200

Step 1: Use the formula

Percentage=Present​/ Total ×100

Step 2: Substitute values

=1200​/ 1500 ×100

Step 3: Solve

$$=0.8\times 100=80\%$$

$$Last\; updated\; by\; NA\; on\; 22-April-2026$$

Explanation

Given:

Initial population = 500
Final population = 600

Step 1: Find increase

$$600-500=100$$

Step 2: Apply the formula

$$text{Percentage increase} = frac{text{Increase}}{text{Original}} times 100$$Original ​×100

=100/500​×100

Step 3: Solve

$$=0.2\times 100=20\%$$

Last updated by NA on 22-April-2026

Explanation

Given:

Distance = 60 km
Time = 1 hour

Formula:

Speed= Distance/Time

​

Calculation:

Speed=60/1​=60 km/h

Explanation

• Confidence sets show possible values of estimated parameters.
• For one coefficient, it is an interval (line).
• For two coefficients, it becomes a 2D region.
• That region is typically elliptical in shape.

Last verified on 22-04-2026

Explanation

144 is the smallest number that is completely divisible by both 18 and 144.

Therefore, LCM(18, 144) = 144.

Last verified on 19-04-2026

Explanation

Time = 19 ÷ 57 = 1/3 hour

Distance at 110 km/h = 110 × 1/3 = 36.67 km

Last verified on 19-04-2026