Ques:- Two pipes X and Y can fill a cistern in 12 minutes and 15 minutes respectively while a third pipe Z can empty the full tank in 6 minutes. X and Y are kept open for 5 minutes in the beginning and then Z is also opened. In what time is the cistern emptied?
Ques:- TELL ME SOMETHING ABOUT UR SELF.
Ques:- A man could buy a certain number of notebooks for Rs.300. If each notebook cost is Rs.5 more, he could have bought 10 notebooks less for the same amount. Find the price of each notebook?
Recent Answer : Added by Admin On 2022-09-29 19:24:04:
According to the question:
⇒(x+5)(y−10)=300
⇒xy+5y−10x−50=xy
⇒5×300−10x−50=0
⇒−150+x2+5x=0
⇒x2+15x−10x−150=0
⇒x(x+15)−10(x+15)=0
⇒x=10 or −15
Price cannot be negative
So, As x>0,x=10.
Ques:- The sum of the two digits of a number is 10. If the number is subtracted from the number obtained by reversing its digits, the result is 54. Find the number?
Recent Answer : Added by Ponranjithkumar J On 2022-05-17 09:08:41:
answer is 28
>2+8=10
>reverse of 28 is 82
>subtract 28 from 82
>82-28=54
the number is 28
Ques:- 20% of (A) 6 litre solution and 60% of (B) 4 litre solution are mixed. What percentage of the mixture of solution is A?
Recent Answer : Added by Jack On 2023-04-21 15:58:12:
Mixture is 1.2 L of A + 2.4L of B which is 3.6L total. 1.2L / 3.6L = 1/3 (0.33)
Ques:- A cistern has a leak which would empty the cistern in 20 minutes. A tap is turned on which admits 4 liters a minute into the cistern, and it is emptied in 24 minutes. How many liters does the cistern hold?
Ques:- Which of the following names is not associated with Shoes :
A. Denim
B. Lotus Bawa
C. Mescos
D. Phoenix
Ques:- The post office is to the east of the school while my house is to the south of the school. The market is to the north of the post office. If the distance of the market from the post office is equal to the distance of my house from the school, in which direction is the market with respect to my school?
Recent Answer : Added by Shraddha On 2020-07-29 09:50:35:
North-east
Ques:- 64309 – 8703 + 798 – 437 = ?
Recent Answer : Added by Pattamuthu B On 2022-05-17 09:07:32:
55967
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Ques:- Outline briefly, your reasons for applying to our Organisation.
Ques:- Four couples sit around a circular table in a party. Every husband sits to the right of his wife. P, Q, R and S are husbands and T, U, V and W are wives. Q – U and R – V are two married couples. S does not sit next to V. T sits to the left of P, who sits opposite S. Q sits between ___.
Ques:- X and Y began business with Rs.3000 and Rs.4000 after 8 months, X withdraws Rs.1000 and Y advances Rs.1000 more. At the end of the year, their profits amounted to Rs.630 find the share of X.
Recent Answer : Added by Sandesh Bhat On 2021-08-13 16:27:09:
240.
X : (3000 x 8) + (2000 x 4) = 32000
Y : (4000 x 8) + (5000 x 4) = 52000
X:Y = 32000:52000 = 8:13
8k + 13k = 630
k = 30
X:8 x 30 = 240
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Ques:- 12.05 x 5.4 ? 0.3 = ?
Recent Answer : Added by Admin On 2020-05-17 12:03:30:
( b ) 216.90
Ques:- Are you ready to relocate with your immediate family to United States as a new employee?
Ques:- Murali travelled from city A to city B at a speed of 40 kmph and from city B to city C at 60 kmph. What is the average speed of Murali from A to C given that the ratio of distances between A to B and B to C is 2 : 3?
Recent Answer : Added by DK BOSS On 2021-07-17 06:18:20:
Answer: 50 kmph.
Explanation:
Let the distances between city A to B and B to C be 2x km and 3x km respectively.
Total time taken to cover from A to C
= (2x)/40 + (3x)/60 = (6x + 6x)/120 = 12x/120 = x/10 Average speed = (2x + 3x)/(x/10) = 50 kmph.
Ques:- Two pipes X and Y can separately fill a cistern in 18 and 24 hours respectively. If they are turned on alternately for one hour each, how long will it take to fill the cistern?
Recent Answer : Added by Admin On 2022-09-28 17:08:06:
X filling rate is 1/18 or 4/72 per hour
Y filling rate is 1/24 or 3/72 per hour
Combined as a pair it’s 7/72 in a complete 2 hour alternating sequence
72+ 7/72 =10 sequences = 70/72 on 20 hours, The outstanding balance is just 2/72
So at 20.5 hours with X turn filling is 100% complete with 72/72
Answer: It will take 20.5 hours to completely fill this tank.
Analysis of measured filling process, from X = 42/72 share & from Y = 30/72 share
Ques:- Which type engg. do u have
Ques:- The HCF and LCM of two numbers are 18 and 3780 respectively. If one of them is 540, then the second one is
A. 112
B. 118
C. 126
D. 142
Recent Answer : Added by anonymous On 2022-03-09 16:38:06:
126
cos if one of the factor is given for hcf and lcm and multiply hcf and lcm and them divide it by the given factor
so 18*3780/540=18*7=126
Ques:- A reduction of 20% in the price of salt enables a lady to obtain 10kgs more for Rs.100, find the original price per kg?
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Ques:- From 7:00 AM to 11:00 AM it rained 2.25 inches. At 11:00 AM the rain increased to fall at a rate of 1.25 in. every two hours. How many inches of rain landed on the ground by 5:00 PM?
Recent Answer : Added by Abhishek Chabri On 2022-10-08 07:25:37:
6 inch
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Ques:- What made you take up present subject / area of specialization and what would you define as your career objective (s)
Ques:- Expectation from Pfizer, why want to join Pfizer.
According to the question:
⇒(x+5)(y−10)=300
⇒xy+5y−10x−50=xy
⇒5×300−10x−50=0
⇒−150+x2+5x=0
⇒x2+15x−10x−150=0
⇒x(x+15)−10(x+15)=0
⇒x=10 or −15
Price cannot be negative
So, As x>0,x=10.