In a Partnership A,B,C invest capitals in the ratio 3:5:7.If at the end of the year the total profit is Rs.90,000 then difference between the profits of A and c in rupees is...

profit is always distributed in investment x time ratio only ,since time for invest is same for the three so profits are distr. in 3:5:7 ratio itself.since total investment is 90,000 for 3+5+7 combined that makes 1part=90,000/15 i.e 1part =6000 ,Now A has 3 parts invest i.e 3 x 6000 =18000 , C has 7 parts i.e 7 x 6000 =42000 now C-A 42,000 -18000 =240000

A can complete work in 25 days and B can complete the same work in 20 days. They started the work together but B left after 4 days and A continued to work. In how many days will the entire work be completed?

In 20 days the entire days would be completed, Explanation: Let us assume total worked to be done is 100 units (LCM of 20 and 25), so A can complete 4 units per day and B can do 5 units per day. They started together and worked for 4 days together hence work done by A and B is (4+5)*4=36 units and hence remaining job is 100-36=64 units now this will be done by A only since A can complete 4 units in a day, hence he can complete 64 units in 16 days. Now question ask us about days in which entire work will be completed,which is equal to 16+4=20 day

A's 1 day work- 1/25 B's 1 day work- 1/20 (A+B)'s 1 day work- 1/25 + 1/20 = 9/100 (A+B)'s 4 days work- 9/100 * 4= 36/100 Work left after 4 days- 1 - 36/100 = 64/100 B left, hence, A will complete the rest of the work in= 64/100 divided by 1/25 = 16 days A will take another 16 days to complete the work.(Total days- 4+16= 20) If the question is asking about how many more days A will take then answer is 16, whereas if it is talking about total days then answer is 20.

How to prepare for LRDI from Scratch. I am scoring nil in mocks in this section. Is there any theory for LRDI or only practice?

Watch the videos of particular topic of LIDR and try solving sets on your own, initially you will take lots of time solving the set but as you keep on practicing, time will reduce, Practicing Daily is the key.

Hi, if you're starting from scratch learn the key concepts first. Watch the concept videos of Arrangements, Puzzles, Venn Diagrams, Games & Tournaments first - and practice at least 2-3 sets every day. Take the LRDI daily targets on a regular basis.

What strategy should I follow to crack CAT 2022 as a beginner?

Hi, start by taking a free CAT mock: https://cracku.in/cat-mock-test , analyse it well and see where you stand. Based on that devise a studyplan - you can download this studyplan: https://cracku.in/cat-crash-course#schedule