Explanation

Boys passed = 60% of 1200 = 720

Girls passed = 40% of 800 = 320

Total appeared = 1200 + 800 = 2000

Total passed = 720 + 320 = 1040

Total failed = 2000 - 1040 = 960

% failed = (960 / 2000) x 100 = 48%

Last verified on 20-10-2026

Explanation

Total vehicles = 160

Cars = 120, so Trucks = 160 - 120 = 40

Green Trucks = 18, so Red Trucks = 40 - 18 = 22

Total Red = 70, so Red Cars = Total Red - Red Trucks

= 70 - 22 = 48

Last verified on 20-10-2026

Explanation

27 - 23 = 4 parts = 200

1 part = 50

Female = 23 × 50 = 1,150

Male = 27 × 50 = 1,350

Last verified on 20-10-2026

Explanation

Profit = 140 - 100 = 40

Profit % = (40/100) × 100 = 40%

Last verified on 20-10-2026

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