Explanation

SP = CP × (100% - Loss%)

SP = 1200 × 0.90 = Rs 1,080

Last verified on 20-10-2026

Explanation

Sample proportion = 12/80 = 0.15 = 15%

Expected in 600 = 600 × 0.15 = 90

Last verified on 20-10-2026

Explanation

A = {2,4,6,8,10}

B = {1,2,3,4,6,12}

A ∩ B = {2,4,6}

3 elements

Last verified on 20-10-2026

Explanation

CP of 15 = SP of 10

Let CP of 1 item = 1

Then CP of 15 items = 15

SP of 10 items = 15

SP of 1 item = 15/10 = 1.5

Profit = 1.5 - 1 = 0.5

Profit % = 0.5 x 100 = 50% profit

Last verified on 20-10-2026

Explanation

3x + x = 32

4x = 32

x = 8

Younger brother = 8 years

Last verified on 20-10-2026

Explanation

2x - 6 = 24

2x = 30

x = 15

Last verified on 20-10-2026

Explanation

Let smallest number = x

x + (x+1) + (x+2) + (x+3) = 54

4x + 6 = 54

4x = 48

x = 12

Last verified on 20-10-2026

Explanation

24:36 = both divided by 12

= 2:3

Last verified on 20-10-2026

Explanation

After 15% discount, you pay 85%

85% of Marked Price = 3400

Marked Price = 3400 / 0.85 = 3400 / (85/100) = 3400 x 100 / 85

= 4000

Last verified on 20-10-2026

Explanation

2 hours 15 minutes = 2.25 hours

Speed = Distance / Time

= 162 / 2.25

= 72 km/h

Last verified on 20-10-2026