Explanation

Rules:

1. A cannot with B = No group can have A + B together

2. C must if D = If D is in group, C must also be in group

3. E cannot with C = No group can have E + C together

B, C, D

No A+B, Has D with C, No E+C -> All rules PASS

Last verified on 17-10-2026

Explanation

To find the percentage of girls, you need to divide the number of girls (28) by the total number of students (20 boys + 28 girls = 48) and multiply by 100:

(28 ÷ 48) x 100 = 58.3%

So, the percentage of girls in the class is 58.3%.

Explanation

Worker-days = Workers × Days

= 5 × 12 = 60 worker-days.

Last verified on 07-09-2026

Explanation

• The person moves 15 km north, then 10 km west, then 15 km south.
• The north and south movements cancel out, leaving 10 km west.

Last verified on 01-09-2026

Explanation

The code is formed by replacing each letter with the letter 2 positions ahead in the English alphabet:

W → Y

H → J

I → K

T → V

E → G

Similarly:

B → D

L → N

A → C

C → E

K → M

So, BLACK → DNCEM.

Last verified on 12-11-2026