Question
Sameer invested Rs. (R + 1000) at simple interest of 20%
p.a. for 3 years. Ajeet invested Rs. (R - 4000) at compound interest of 20% p.a. for 3 years. If the difference between interest earned from both investments is Rs. 1,080, then which of the following statement(s) is/are true? I. 'R' can take multiple values. II. The minimum value that 'R' can take is less than 10,000. III. 'R' must be an even number.Solution
Simple interest = (Sum X rate of interest X time period in years) ÷ 100 So, simple interest earned = {(R + 1000) X 20 X 3} ÷ 100 = Rs. '0.6R + 600' And compound interest earned = (R - 4000) X {1 + (20/100) }3 - (R - 4000) = (R - 4000) X (1.728 - 1) = (R - 4000) X 0.728 = Rs. '0.728R - 2912' So, two cases are possible; Case (I) : simple interest > compound interest So, 0.6R + 600 = 0.728R - 2912 + 1080 Or, 2432 = 0.128R So, R = 19000 Case (II) : simple interest < compound interest So, 0.6R + 600 + 1080 = 0.728R - 2912 Or, 4592 = 0.128R So, R = 35875 For statement I: Since, 'R' can take two values So, statement I is true. For statement II: Again, since 'R' = 19,000 or 35875 which are greater than 10,000 So, statement II is false. For statement III: Since, 'R' has multiple values So, statement III is false.
If "H © I & J # D # E @ F & G % K $ L", then how is E related to I?
If A ÷ B means that A is the brother of B, A × B means that A is the sister of B, A – B means that A is the father of B then which of the following ...
If A # B means A is brother of B,
A @ B means A is mother of B
A $ B means A is father of B
A & B means A is sister of B.
In...
If R ÷ S + T + U, which of the following is true?
Statements: T ≥ S > H = O, R ≥ M > H
Conclusions : I. S > M II. R > O
Answer the following question based on the direction given below.
If 'A # B' means 'A is the son of B' 'A $ B' means 'A is the sister of B' 'A & ...
'A # B' means 'A is the mother of B'. 'A & B' means 'A is the spouse of B'. 'A % B' means 'A is the sister-in-law of B'. If F # E, D & F, B % F, A & C #...
If B is the daughter of F’s brother in law, then which of the following expression is true?
If expression C % E $ A @ B & O # F @ G is true, then which of the following expressions is definitely correct?
If 'A @ B' means 'A is the daughter of B'. 'A & B' means 'A is the husband of B'. 'A % B' means 'A is the wife of B'. 'A $ B' means 'A is mother of B'....
Relevant for Exams:
