How should we go about solving these questions? Is differentiation to find the point of maxima the only way?
#CAT16 #GEOMETRY Approach please?
#CAT16 #GEOMETRY #CyclicQuadrilaterals
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Solution?
#Successive Change #Percentage After three successive increases, Ram's salary became 378/125 times of his initial salary. By what % was his salary increased the 1st time if 3rd increase (in %) was twice as much as the 2nd increase and the 2nd increase (in %) was twice as the 1st time? Approach please
Approach?
(2p+1)^2/2p+7 is an integer,find p
Two vessels A and B contain spirit and water mixed in the ratio 5:2 and 7:6 respectively. Find the ratio in which these mixture be mixed to obtain a new mixture in vessel c containing spirit and water in the ratio 8:5? A. 1 : 7 B. 2 : 9 C. 7 : 9 D. 3 : 8.. pls explain
Plz mention approach
Log((a+b)/2) =1/2 (Loga+Logb) then
1) a=b
2) a+b=2
3) a>b
4) a
Hi everyone.This is a question from Quantum Cat. The approach that I have used is as follows: To cover 0 m : 1st 1m up then 1m down ,so total 15 seconds Next 1 m is covered, in 20+ 5 = 25seconds. Thus in total 0+1+2+3+......+9 metres covered in 15+25+35+......+105 seconds . So a total of 45 m covered in 600 seconds. Last 5 m covered in 50 seconds. Hence, my answer comes out to be : 650 seconds or 10 min 50 seconds. The correct answer given in the book is (a) 9 min 10 sec or 550 seconds. From where do I get an extra 100 seconds. My approach seems perfectly fine to me. Can anyone tell me what's wrong with it?
Soln
How to sove without using hit and trial
Q7
Q23
The ratio of the cost price to the marked price of a watch is 3:5 and ratio of the percentage profit to the percentage discount is 5:3.Find the profit percentage ? pls mention approach.
If f(xy) = f(x) + f(y) + f(x)*f(y) - 10/9 and f(6) = 2/3, then the value of f(1/6) ?