Explanation

Explanation

Given:

Ratio of two numbers = 3 : 5
Sum = 40

Step 1: Let the numbers be

$$3x\text{ and }5x$$

Step 2: Use the sum

3x+5x=40
8x=40
$$x=5$$

Step 3: Find the numbers

$$3x=15,$$

$$5x=25$$

$$Last\; updated\; by\; NA\; on\; 24-April-2026$$

Explanation

Step 1: Convert the percentage to a fraction

15%=15/100​

Step 2: Multiple

$$frac{15}{100} times 240 = 36$$100×240=36

Last updated by NA on 24-April-2026

Explanation

If yesterday was Thursday, then:

• Today is Friday
• Tomorrow will be Saturday

Last updated by NA on 24-April-2026

Explanation

sin2θ≈0.329

cos2θ≈0.671

Explanation

Given:

Total students = 500
Present students = 300

Step 1: Find absent students

$$\text{Absent}=500-300=200$$

Step 2: Form ratio (Present : Absent)

$$300:200$$

Step 3: Simplify the ratio

Divide both by 100:

$$3:2$$

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

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

Explanation

Assume price = 100
After +20% → 120
After −20% → 96

So the final price is less than the original.

Last updated by NA on 23-April-2026

Explanation

Step 1: Understand the ratio

Boys : Girls = 3 : 2
Total parts = 3 + 2 = 5

Step 2: Find value of one part

$$frac{25}{5} = 5$$

Step 3: Find number of boys

$$3\times 5=15$$

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