ISSB - PAF Officer Selection Mathematics Speed Distance — Set 3

Speed Distance MCQs set 3 for ISSB - PAF Officer Selection Mathematics — 20 solved questions.

ISSB - PAF Officer Selection Mathematics Speed Distance — Set 3

  1. Question 1

    Q1. Boat 10 km/h in still water, upstream 2 km/h. Upstream speed?

    • A) 6 km/h
    • B) 8 km/h
    • C) 10 km/h
    • D) 12 km/h

    Answer: 8 km/h

    Explanation: Upstream speed is boat minus stream so 10 minus 2 equals 8.

  2. Question 2

    Q2. A walks 4 km/h, B runs 8 km/h. B catches A who had 2 km head start in?

    • A) 0.25 h
    • B) 0.5 h
    • C) 1 h
    • D) 1.5 h

    Answer: 0.5 h

    Explanation: Relative speed 4 km/h closes 2 km gap in 0.5 hours. Work each step carefully; ISSB math rewards accuracy under time pressure.

  3. Question 3

    Q3. Cyclist 18 km/h for 2 h then 12 km/h for 1 h. Average speed?

    • A) 14 km/h
    • B) 15 km/h
    • C) 16 km/h
    • D) 17 km/h

    Answer: 16 km/h

    Explanation: Total 48 km in 3 hours gives average speed 16 km/h. Work each step carefully; ISSB math rewards accuracy under time pressure.

  4. Question 4

    Q4. Train 108 km/h for 25 minutes. Distance?

    • A) 40 km
    • B) 42 km
    • C) 45 km
    • D) 48 km

    Answer: 45 km

    Explanation: Twenty five minutes is 5/12 hour so 108 times 5/12 equals 45 km.

  5. Question 5

    Q5. Man rows 6 km/h in still water, stream 2 km/h. Downstream speed?

    • A) 4 km/h
    • B) 6 km/h
    • C) 8 km/h
    • D) 12 km/h

    Answer: 8 km/h

    Explanation: Downstream speed is rowing plus stream so 8 km/h. Work each step carefully; ISSB math rewards accuracy under time pressure.

  6. Question 6

    Q6. Relative speed same direction 80 and 50 km/h?

    • A) 20 km/h
    • B) 30 km/h
    • C) 40 km/h
    • D) 130 km/h

    Answer: 30 km/h

    Explanation: Same direction subtract speeds so 80 minus 50 equals 30. Work each step carefully; ISSB math rewards accuracy under time pressure.

  7. Question 7

    Q7. A train 150 m long passes pole in 15 s. Speed?

    • A) 10 m/s
    • B) 12 m/s
    • C) 15 m/s
    • D) 20 m/s

    Answer: 10 m/s

    Explanation: Speed equals distance over time so 150 divided by 15 is 10 m/s.

  8. Question 8

    Q8. Two cars 60 km apart approach at 40 and 20 km/h. Meet in?

    • A) 0.5 h
    • B) 1 h
    • C) 1.5 h
    • D) 2 h

    Answer: 1 h

    Explanation: Combined speed 60 km/h closes 60 km in 1 hour. Apply the same method to similar ISSB quantitative items.

  9. Question 9

    Q9. Walk 6 km at 3 km/h and 6 km at 6 km/h. Total time?

    • A) 2 h
    • B) 2.5 h
    • C) 3 h
    • D) 3.5 h

    Answer: 3 h

    Explanation: First leg 2 hours plus second leg 1 hour gives 3 hours total.

  10. Question 10

    Q10. Train 60 km/h for 3 hours. Distance?

    • A) 160 km
    • B) 170 km
    • C) 180 km
    • D) 190 km

    Answer: 180 km

    Explanation: Distance equals speed times time so 60 times 3 is 180 km.

  11. Question 11

    Q11. Car 80 km/h for 45 minutes. Distance?

    • A) 55 km
    • B) 58 km
    • C) 60 km
    • D) 65 km

    Answer: 60 km

    Explanation: Forty five minutes is 3/4 hour so 80 times 3/4 equals 60 km.

  12. Question 12

    Q12. Two trains 40 km/h and 60 km/h same direction. Relative speed?

    • A) 10 km/h
    • B) 20 km/h
    • C) 100 km/h
    • D) 50 km/h

    Answer: 20 km/h

    Explanation: Same direction subtract speeds so 60 minus 40 equals 20 km/h. Apply the same method to similar ISSB quantitative items.

  13. Question 13

    Q13. Boat 8 km/h in still water, downstream 3 km/h stream. Downstream speed?

    • A) 5 km/h
    • B) 8 km/h
    • C) 11 km/h
    • D) 24 km/h

    Answer: 11 km/h

    Explanation: Downstream speed is boat plus stream so 11 km/h. Apply the same method to similar ISSB quantitative items.

  14. Question 14

    Q14. A walks 5 km/h, B runs 10 km/h. B catches A with 3 km head start in?

    • A) 0.3 h
    • B) 0.5 h
    • C) 0.6 h
    • D) 1 h

    Answer: 0.6 h

    Explanation: Relative speed 5 km/h closes 3 km gap in 0.6 hours. Apply the same method to similar ISSB quantitative items.

  15. Question 15

    Q15. Cyclist 24 km/h for 1.5 h then 16 km/h for 1 h. Average speed?

    • A) 20 km/h
    • B) 21 km/h
    • C) 22 km/h
    • D) 23 km/h

    Answer: 20 km/h

    Explanation: Total 52 km in 2.5 hours gives average speed 20.8 about 21.

  16. Question 16

    Q16. Train 84 km/h for 30 minutes. Distance?

    • A) 40 km
    • B) 42 km
    • C) 44 km
    • D) 46 km

    Answer: 42 km

    Explanation: Thirty minutes is 1/2 hour so 84 times 1/2 equals 42 km.

  17. Question 17

    Q17. Man rows 7 km/h in still water, stream 2 km/h. Upstream speed?

    • A) 4 km/h
    • B) 5 km/h
    • C) 6 km/h
    • D) 9 km/h

    Answer: 5 km/h

    Explanation: Upstream speed is rowing minus stream so 5 km/h. Work each step carefully; ISSB math rewards accuracy under time pressure.

  18. Question 18

    Q18. Relative speed opposite direction 85 and 65 km/h?

    • A) 10 km/h
    • B) 20 km/h
    • C) 150 km/h
    • D) 75 km/h

    Answer: 150 km/h

    Explanation: Opposite directions add speeds so 85 plus 65 equals 150. Work each step carefully; ISSB math rewards accuracy under time pressure.

  19. Question 19

    Q19. A train 180 m long passes pole in 12 s. Speed?

    • A) 12 m/s
    • B) 15 m/s
    • C) 18 m/s
    • D) 20 m/s

    Answer: 15 m/s

    Explanation: Speed equals distance over time so 180 divided by 12 is 15 m/s.

  20. Question 20

    Q20. Two cars 120 km apart approach at 60 and 40 km/h. Meet in?

    • A) 1 h
    • B) 1.2 h
    • C) 1.5 h
    • D) 2 h

    Answer: 1.2 h

    Explanation: Combined speed 100 km/h closes 120 km in 1.2 hours. Work each step carefully; ISSB math rewards accuracy under time pressure.