Maths Practice Question and Answer
8 Q: The LCM of two numbers is 45 times their HCF. If one of the numbers is 125 and sum of HCF and LCM is 1150. The other numbers is-
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5f6347313366f3388367654c- 1225true
- 2235false
- 3240false
- 4250false
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Answer : 1. "225"
Q: A man left 9 minutes early than the scheduled time and in order to reach the destination 378 km away in time, it has to slow its speed by 6 km/h from the usual. What is the usual speed (in km/hr.) of the man?
2338 05e95b6de855a3d5998809717
5e95b6de855a3d5998809717- 156false
- 263false
- 394.5false
- 4126true
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Answer : 4. "126"
Q: A sum of money triples itself in 8 years simple interest. Find the rate of percent per annum? 2338 15b5cc6bee4d2b4197774d9a1
5b5cc6bee4d2b4197774d9a1- 130%false
- 225%true
- 322%false
- 418%false
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Answer : 2. "25%"
Q: If x+y=14: x3+y3=1064, then the value of (x-y)2 is:
2335 05ffc2c736557c73c86cd3d2c
5ffc2c736557c73c86cd3d2c- 181false
- 236true
- 3100false
- 464false
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Answer : 2. "36"
Q: A hemispherical cup of radius 4 cm is filled to the brim with coffee. The coffee is then poured into a vertical cone of radius 8 cm and height 16 cm. The percentage of the volume of the cone that remains empty is:
2334 05d70a88b56d6e076952aefba
5d70a88b56d6e076952aefba- 187.5%true
- 280.5%false
- 381.6%false
- 488.2%false
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Answer : 1. "87.5%"
Q: The length of diagonal BD of a parallelogram ABCD is 36 cm. P and Q are the centroids of triangle ABC and triangle ADC respectively. What is the length (in cm) of PQ?
2333 05eff044862ffbb45bc220c52
5eff044862ffbb45bc220c52- 126false
- 239true
- 313false
- 452false
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Answer : 2. "39 "
Q: A General of an Army wants to create a formation of square from 36562 army men. After arrangement, he found some army men remained unused.
2333 05f08283a8e448621429ebfe6
5f08283a8e448621429ebfe6- 181true
- 297false
- 336false
- 465false
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Answer : 1. "81"
Q: A boat running upstream takes 8 hours 48 minutes to cover a certain distance, while it takes 4 hours to cover the same distance running downstream. What is the ratio between the speed of the boat and speed of the water current respectively? 2333 05b5cc6bce4d2b4197774d88b
5b5cc6bce4d2b4197774d88b- 17:4false
- 211:4false
- 34:7false
- 48:3true
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Answer : 4. "8:3"
Explanation :
Answer: D) 8:3 Explanation: Let the speed of the boat upstream be p kmph and that of downstream be q kmph Time for upstream = 8 hrs 48 min = 845hrs Time for downstream = 4 hrs Distance in both the cases is same. => p x 845= q x 4 => 44p/5 = 4q => q = 11p/5 Now, the required ratio of Speed of boat : Speed of water current = q+p2:q-p2 => (11p/5 + p)/2 : (11p/5 - p)/2 => 8 : 3