311. A man takes 5 hours 45 min in walking to a certain place and riding back. He would have gained 2 hours by riding both ways. The time he would take to walk both ways is
Answer: 7 hrs 45 min
Explanation:Here is no explanation for this answer
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312. An unbiased cubic die is thrown.What is the probabiltiy of getting a multiple of 3 or 4?
Answer: 1/2
Explanation:Here is no explanation for this answer
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313. Anand and Deepak started a business investing Rs.22,500 and Rs. 35,000 respectively. Out of a total profit of Rs.13,800. Deepak's share is?
Answer: Rs. 8400
Explanation:Here is no explanation for this answer
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314. Avendor bought toffees at 6 for a rupee. How many for a rupee must he sell to gain 20%?
Answer: 5
Explanation:Here is no explanation for this answer
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315. Sachin is younger than Rahul by 7 years. If their ages are in the respective ratio of 7:9, how old is Sachin?
Answer: 24.5 years
Explanation:Here is no explanation for this answer
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316. If three eighth of a number is 1257, the one fourth of the number will be:
Answer: 838
Explanation:Let number is x, then
(3/8)*x = 1257
=> x/8 = 419
=> x/4 = 838
=> (1/*x = 838
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317. [6/4 + 4/9] of 3/4 divide 5/3 * 5/4 - 1/3
Answer: 5/6
Explanation:[6/4 + 4/9 ] of 3/4 divides 5/3 *5/4-1/3
=[35/18] of 3/4 divides 25/12-1/3
=35/24 divides 21/12
=35/24/21/12
=35/24*12/21
=5/6
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318. In row of girls,there are 16 girls between priya and natashpriya is the thirty second girl from the left end of the row. If priya is nearer than natasha to the right end of the row, then how far away is natasha from the left end of the row?
Answer: 15
Explanation:Left end -... Natash... 16 gals .... Priya ...right end.
As priya is 32nd girl from left.
so, to get the position of Natash.
32 - {16+1=}17 = 15
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319. A person traveled from his house to office at 30 kmph, then he was late to his office by 5 minutes. If he increases his speed by 10 kmph he would be early by 15 minutes to his office. What should be his speed so that he reaches his office on time ?
Answer: 32 kmph
Explanation:Let the distance between house and office be x km.
=> (x/30) – (x/40) = 20/40;
=> x/120 = (1/3)x = 40 km
Travelling at 40 kmph, he reaches office in 1 hour i.e. 15 minutes early. So, required speed = 40/ 5/4 = 40 * 4/5 = 160/5 = 32 kmph
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320. When 4 dice are thrown, what is the probability that the same number appears on each of them?
Answer: 1/216
Explanation:When 4 dice are thrown simultaneously, then the total number of possible outcomes is 64 = 1296.
The chances that all the dice show same number (1,1,1,1), (2,2,2,2), (3,3,3,3), (4,4,4,4), (5,5,5,5), (6,6,6,6)} is 6.
Hence, the required Probability = Event/ Sample space = 6/64 = 1/63 =
1/216.
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