unable to understand explanation of this in mock
Three IT professionals who were equally efficient in doing a particular task started working together on an offsite project aimed at completing it within a specified number of days. However, they faced delays because each professional had to take time off to learn a new programming language during the project. This resulted in them completing the task 15 days later than originally planned. If the first IT professional took 4 days longer than the third professional to learn the new language, and the second professional took 8 days longer than the third, how many days did the third IT professional spend learning the new programming language?
unable to understand this, pls explain this through logical and formula method both, what is the removal formula in such ques?
In a mixture of 70% milk with water, 10 litres of mixture removed and replaced with water. This is repeated 3 times. Find out milk percentage in final mixture if initially quantity of mixture was 100 litres
how to solve
There are 3 containers of capacity A, B and C. These 3 containers are filled with milk and emptied into an empty vessel X. Then, milk is poured from vessel X to vessel Y using container A, repeated 2 more times. Now milk is poured from vessel Y to vessel Z using container C, in a single go. If the capacity (in litres) of A is at least 5 and at most 8, that of B is at least 10 and at most 12, and that of C is at least 7 and at most 14, then what is the maximum ratio of final quantity of milk in vessel Z to vessel X?
how to solve
Two identical bottles of 800 ml each, Bottle A contains milk of 20% concentration and bottle B contains milk of concentration 80%. 25% of solution from bottle A is mixed with 50% of solution from bottle B in Jar C, Remaining Solution is mixed and kept in Jar D. How much water (in ml, correct up to 2 decimal places) should be added and to which Jar so that concentration of both the Jars becomes same?
how to solve
There is total 15 Kg stock of three types of quality of rice low, medium and high. Low quality is sold at Rs 45/Kg, medium quality at Rs 60/Kg and high quality at Rs 75/Kg. A mixture is prepared by mixing these three types of rice in the ratio of 1: 2: 3 respectively. In 8 Kg of this mixture x Kg of low quality and y Kg of high-quality rice is mixed and final mixture is sold at Rs 83.2/Kg which gives a profit of 30%, which of the following best describes the relation between x and y?
pls solve
A mixture P is formed by removing a certain amount of coffee from a coffee jar and replacing the same amount with cocoa powder. The same amount is again removed from mixture P and replaced with same amount of cocoa powder to form a new mixture Q. If the ratio of coffee and cocoa in the mixture Q is 16 : 9, then the ratio of cocoa in mixture P to that in mixture Q is
unable to understand this at all
Pipes A and C are fill pipes while Pipe B is a drain pipe of a tank. Pipe B empties the full tank in one hour less than the time taken by Pipe A to fill the empty tank. When pipes A, B and C are turned on together the empty tank us filled in two hours, if b and c turned on together when the tank is empty and pipe b is turned off after one hour then pipe c take another one hour and 15 minutes to fill remaining tank. if pipe a can fill the empty tank in less than 5 hours then time taken by c to fill the empty tank in mins is?
unable to understand
A, B and C works such that exactly one of them works at any day. Also all of them work in a way such that they take an exact 3 days gap between two working days. (i.e if any of them works on day 1 then next he will work on day 4 and then day 7 and so on). If A, B and C work on Day 1, Day 2 and Day 3 respectively, the work gets over in 32 days. If A, C and B work on Day 1, Day 2, and Day 3 respectively, the work gets over in 31.5 days. If B, C and A work on Day 1, Day 2, and Day 3respectively, the work gets over in 31.333 days. If C, A and B work on Day 1, Day 2 and Day 3 respectively then how much time will it take to complete the job?
pls explain through efficiency ratio
C alone completes a work in 8 days while A and B together can complete the same work in 1 day. Also B and C together can complete another work in 2 days while A alone can complete the same work in 1 day. Find the efficiency ratio of A and B.
unable to understand AND concept in men, women, boys girls etc. what is the approac using efficiency method
A work is done by hiring some men and some boys. The work requires constructing a wall or breaking a wall. Each of these men or boys can either construct the wall or break the wall. During working, the speed of each man or boy to construct the wall is 10 times the speed of each man or boy respectively to break the wall. It is known that the speed of each man is the same and the speed of each boy is also the same and not equal to that of each man. One man & 7 boys can break the wall in 6 days while 1 man & 3 boys can build the wall in 1 day. In how many days will 1 man and 1 boy together break a wall?