281. If 6 men dig a hole in 8 hours, how long will 4 men take?
- A. 8 hours
- B. 12 hours
- C. 10 hours
- D. 6 hours
Check answer and explanation
Answer: 12 hours
Explanation Work is inversely proportional to workers: 6×8 = 4×x → x = 12
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Answer: 12 hours
Explanation Work is inversely proportional to workers: 6×8 = 4×x → x = 12
ایک سمندری میل کس کے برابر ہے؟
Answer: 1852 kilometers
Explanation One nautical mile is equal to 6,076 feet (1,852 meters/kilometers). It is defined as exactly 1,852 meters (6,076 ft; 1.151 mi). One nautical mile per hour is equal to 1 knot.
Answer: 17
Explanation Sabir's brother's birthday is the 16th and 17th of Feb Rabia's brother's birthday is the 17th and the 18th Feb 17th is common in both birthday
Answer: 5 km, 50 minutes
Explanation - Speed for first half = 1 km/hr - Time for first half = 2 hours 30 minutes = 2.5 hours - Distance for first half = Speed × Time = 1 × 2.5 = 2.5 km Total distance between towns = 2 × 2.5 = 5 km - New speed for second half = 1 + 2 = 3 km/hr - Time for second half = Distance ÷ Speed = 2.5 ÷ 3 ≈ 0.833 hours = 50 minutes (approx)
Answer: 9 Days
Explanation 360 = 40x x = 9 days
Answer: 5 kmph
Explanation 1. Let Ali's speed be x kmph. Then, the time taken by Ali to cover 30 km is 30/x hours. 2. Since Ali takes 2 hours more than Raza, the time taken by Raza to cover 30 km is (30/x) - 2 hours. 3. If Ali doubles his speed, his new speed is 2x kmph. The time taken by Ali to cover 30 km at this new speed is 30/(2x) hours. 4. According to the problem, if Ali doubles his speed, he would take 1 hour less than Raza. So, we can set up the equation: (30/x) - 2 = (30/(2x)) - 1 Simplifying the equation, we get: 30/x - 2 = 15/x - 1 Multiplying both sides by x, we get: 30 - 2x = 15 - x Simplifying further, we get: x = 5 So, Ali's speed is 5 kmph .
Answer: 8
Explanation w = Men x Days x Hours 12 x 8 x 10 = 960 960 / 8 x 15 = 8 Men
Answer: 960 km
Explanation Given: Speed of train = 120 km per hour Time = 8 hours Formula Distance = Speed × Time Distance = 120 × 8 = 960 km Last updated on 06-March-2026
Answer: 64
Explanation Meena's problem-solving rate per minute: 24 problems ÷ 15 minutes = 1.6 problems per minute In 40 minutes : 1.6 × 40 = 64 problems .
Answer: 36 kg
Explanation 60 women spin 48 kg of cotton in 8 hours. First, find the total hours worked by 60 women: 60 women x 8 hours = 480 hours. Now, find the total cotton spun per hour: 48 kg ÷ 480 hours = 0.1 kg/hour. Since 30 women work 12 hours daily, find their total hours: 30 women x 12 hours = 360 hours. Finally, find the total cotton spun by 30 women: 360 hours x 0.1 kg/hour = 36 kg. So, the correct answer is: 36 kg
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