A. 200
B. 250
C. 300
D. 350
Solution:
Work ∝ Men × Days
Total consumption = 250 kg
1 man-day consumption = 250 ÷ (25 × 20) = 0.5 kg
For 20 × 25 = 500 man-days → 500 × 0.5 = 250 kg
Answer: B
Category: Mathematics
Find the missing number in the series: 1, 6, 13, 22, 33, ?
A. 44
B. 45
C. 46
D. 47
Solution:
Pattern: +5, +7, +9, +11 …
Next = 33 + 13 = 46
Answer: C
If 12 men can complete a work in 18 days, in how many days will 9 men complete the same work?
A. 20
B. 22
C. 24
D. 30
Solution:
Work ∝ Men × Days
12 × 18 = 9 × x
x = (12 × 18) / 9 = 24
Answer: C
A train 150 m long is running at a speed of 54 km/h. How long will it take to pass a man standing on a platform?
A. 8 sec
B. 10 sec
C. 12 sec
D. 15 sec
Solution:
Speed = 54 × 1000 / 3600 = 15 m/s
Time = Distance ÷ Speed = 150 ÷ 15 = 10 sec
Answer: B
The average of first five multiples of 3 is:
A. 9
B. 10
C. 11
D. 12
Solution:
Multiples: 3, 6, 9, 12, 15
Sum = 45 → Average = 45 ÷ 5 = 9
Answer: A
A number is increased by 20% and then decreased by 20%. The net change is:
A. 0%
B. 4% increase
C. 4% decrease
D. 2% decrease
Solution:
Effect = (20 – 20 – (20×20)/100) = –4%
Answer: C
A man buys an article for Rs. 500 and sells it for Rs. 600. Profit % = ?
A. 10%
B. 15%
C. 20%
D. 25%
Profit = 600 – 500 = 100
Profit % = (100 / 500) × 100 = 20%
Find the one which does not belong to the group:
A. Pakistan : Rupee
B. America : Dollar
C. Kuwait : Dinar
D. Australia : Pound
E. Japan : Yen
Find the wrong number in the series:
1, 1, 2, 6, 24, 96, 720
A. 6
B. 24
C. 96
D. 720
