Two numbers A and B are in the ratio of 4 : 5. Their average is 180. If A is increased by 20% then to get the average increased by…
Ans: (c) 60
The monthly income of A and B are in the ratio of 4 : 5 and their monthly expenses are in the ratio of 8 : 11. If each of them saves…
Ans: (b) Rs. 6000
Instead of dividing ₹133 among A, B and C in the ratio 1/2:1/4:1/6 , by mistake it was divided in the ratio of 2:4:6. Who gained in the transaction?
Ans: (d) Both B and C
Question: If , find (a) 7 : 10(b) 32 : 65(c) 15 : 41(d) 19 : 63 Ans: (b) 32 : 65 Explanation: Aliter: If you are only interested in answer try solving in the following way: put a = 2, b = 3 in the expression
If a:b=2:3, then find (3a^3+4b^2 a)/(5a^2 b+5b^3 ) Read More »
<<Prev Home Next>> ( an – bn ) is always divisible by (a – b) whereas ( an + bn ) is divisible by (a + b) only when n is odd. See the following image for various expansion of the terms. Question: ( xn – an ) is completely divisible by (x – a)
Divisibility Rule for Algebraic Function Read More »