Question
If a sum when placed at compound interest grows to
Rs.6,400 in 2 yrs and to Rs. 8,000 in 3 yrs, find the rate percent p.a.Solution
Let the principal be P. ∴ P + CI for 3 yrs = Rs. 8,000 ----- (i) And P + CI for 2 yrs = Rs. 6,400 ----- (ii) Subtracting (ii) from (i), we get CI for the 3rd yr = 8,000 – 6,400 = Rs. 1600 Thus, CI calculated in the 3rd yr is basically the interest on the amount generated after 2 yrs which is Rs. 6,400. ∴R = (SI×100)/(P×T) = (1600×100)/(6400×1) = 25 % p.a.
Study the given pattern carefully and select the number that can replace the question mark (?) in it.
4 7 6
15 ? 21
44 68 60
Statements:
V ≤ P < S = B; T < U ≤ I = B; N < J < T
Conclusions:
I. J > P
II. N < S
If '+' means 'division', '-' means 'multiplication', '÷' means 'addition' and 'x' means 'subtraction', then what is the value of the following express...
Statements:
J > G = Y ≥ K = S; L < T = I ≤ P ≤ E = K
Conclusions:
I. G > T
II. T = G
Which among the given operators should replace the “%” (in the same order) in the given expression below:
8 % 13 % 8 % 69 % 36 % 9
Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation.
48 * 14 * 7 * 11 * 4 = 89
If 'P' denotes 'addition', 'Q' denotes 'subtraction', 'R' denotes 'multiplication', and 'S' denotes 'division', then what will be the value of the foll...
Select the correct combination of mathematical signs that can sequentially replace the $ signs and make the equation correct.
252 $ 28 $ 17 $ ...
Select the correct combination of mathematical signs that can sequentially replace '*' sign and balance the equation given below.
88 * 16 * 4 * 1...
Monthly income of A is Rs. 6000 and he saves 25% of his monthly income. If monthly expenditure of A is decreased by 35% while his monthly savings is inc...
