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Let A,B,C be three positive integers such that the sum of A and the mean of B&C is 5.
also,, the sum of B and the mean of A&C is 7.
what is the sum of A and B ?

√x+1/√x=7 then x2+1/x2

since cat 2020 was conducted for 2 hours, why aren't the mocks as per that time duration? What is the point of taking it for 3 hours now?

The ratio of time taken by A and B together to B alone to do a piece of work is 3:5 . what is the ratio of A's efficiency to A's and B's together efficiency

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I am a general non engineer female CAT aspirat with 94% in both 10 and 12th and 7.9 cgpa in grad. I gave my first attempt in 3rd year of college wherein i scored 62%ile. I took a drop after college and prepared and improved my score in CAT20 to 89%ile- 91 quant, 95 dilr, 56 varc. I have offer letters from TAPMI, GIM. I think i can do better in my next attempt but i have apprehensions since i dont have any job rn. I am too unsure how should i progress as i have decent acads but drop years will also increase. Please help

there are two positive numbers.Each was increased by 30 and then by same percentage as it was increased the first time . after the second increase the value of each no. is 147 . find the difference between the two numbers.

How to find number of integral solutions of equation:
a + b + c + d = 30
given that 0<=(a,b,c)<=15 ?