Related Questions

If Arif works alone he will take 20 more hours to complete a task than if he works with Babu to complete the task. If Babu work alone, he will take 5 more hours to complete the task than if he works with Arif to complete the task. What is the ratio of the time taken by Arif to than taken by Babu if each of them works alone to complete the task?
A 2 : 1
B 5 : 3
C 7 : 5
D None of these
Five motorbikes had a race . The Honda beat the Hero but couldn't overtake the Kawasaki . The Vespa failed to overtake the Suzuki but beat the Kawasaki . Which bike came last ?
A Honda
B Hero
C Kawasaki
D Vespa
In a race of 200 m, A can beat B by 31 m and C by 18 m. In a race of 350 m, C will beat B by:
A 22.75m
B 25 m
C 19.5 m
D 747
In a race 200m, A can beat B by 31m and C by 18m. In arace of 350m, C will beat B by------
A 25m
B 22.75m
C 19.75m
D 19m
আজ পরীক্ষা দিতে আসার সময় তোমার কোনো এক বন্ধুর খুব টেনশন হচ্ছিল। টেনশনে তার হাত-পা ঘামছিল, গলা শুকিয়ে যাচ্ছিল, হৃৎস্পন্দন বেড়ে যাচ্ছিল। এমতাবস্থায়, তার কোন স্নায়ুতন্ত্র কার্যকর ছিল? (One of your friends was in serious tension while coming for exam today. He was sweating, having dry mouth, and his heart beat was accelerated. Which nervous system was in action at that time?)
A ঐচ্ছিক (Somatic)
B কেন্দ্রীয় (Central)
C সমবেদী (Sympathetic)
D পরাসমবেদী (Parasympathetic)
In a healthy person rate of heart beat on one minute is
A 58 times
B 67 times
C 72 times
D 90 times
Which of the following increases the rate of heart beat?
A Peripheral nerves
B Sympathetic nerves
C Parasympathetic nerves
D Cranial nerves
Heart rate can be increased in a case of heart block following treatment with:
A Dopamine
B Isoprenaline
C Atropine
D Digoxin
E Noradrenaline
“She never lost heart, even in the face of adversity.” Here, ‘lost heart’ means-
A to feel encouraged
B to feel discouraged
C to have a heart attack
D to lose one's beloved
A can complete a task alone in 8 days, while B takes 12 days to do it by herself. Together with C it takes them 4 days to complete the work. If C and D together can complete the task in 15 days, then how many days will D need to complete the task by herself?
A 36
B 32
C 40
D 30

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