Discussion
Home ‣ Aptitude ‣ Decimal Fraction Comments
- Question
The price of commodity X increases by 40 paise every year, while the price of commodity Y increases by 15 paise every year. If in 2001, the price of commodity X was Rs. 4.20 and that of Y was Rs. 6.30, in which year commodity X will cost 40 paise more than the commodity Y?
Options- A. 2010
- B. 2011
- C. 2012
- D. 2013
- Correct Answer
- 2011
ExplanationSuppose commodity X will cost 40 paise more than Y after z years.Then, (4.20 + 0.40z) - (6.30 + 0.15z) = 0.40
⟹ 0.25z = 0.40 + 2.10
⟹ z = 2.50 = 250 = 10. 0.25 25 ∴ X will cost 40 paise more than Y 10 years after 2001 i.e., 2011.
Decimal Fraction problems
Search Results
- 1.
4.2 x 4.2 - 1.9 x 1.9 is equal to: 2.3 x 6.1
Options- A. 0.5
- B. 1.0
- C. 20
- D. 22 Discuss
Correct Answer: 1.0
Explanation:
Given Expression = (a2 - b2) = (a2 - b2) = 1. (a + b)(a - b) (a2 - b2) - 2. The rational number for recurring decimal 0.125125.... is:
Options- A.
63 487 - B.
119 993 - C.
125 999 - D. None of these Discuss
Correct Answer:125 999
Explanation:
0.125125... = 0.125 = 125 999 - 3. Which of the following are in descending order of their value?
Options- A.
1 , 2 , 3 , 4 , 5 , 6 3 5 7 5 6 7 - B.
1 , 2 , 3 , 4 , 5 , 6 3 5 5 7 6 7 - C.
1 , 2 , 3 , 4 , 5 , 6 3 5 5 6 7 7 - D.
6 , 5 , 4 , 3 , 2 , 1 7 6 5 7 5 3
Discuss
Correct Answer:6 , 5 , 4 , 3 , 2 , 1 7 6 5 7 5 3
- 4. 3.87 - 2.59 =?
Options- A. 1.20
- B. 1.2
- C. 1.27
- D. 1.28 Discuss
Correct Answer: 1.28
Explanation:
3.87 - 2.59 = (3 + 0.87) - (2 + 0.59)= ❨ 3 + 87 ❩ - ❨ 2 + 59 ❩ 99 99 = 1 + ❨ 87 - 59 ❩ 99 99 = 1 + 28 99 = 1.28.
- 5.
.009 = .01 ?
Options- A. .0009
- B. .09
- C. .9
- D. 9 Discuss
Correct Answer: .9
Explanation:
Let .009 = .01; Then x = .009 = .9 = .9 x .01 1 - 6. 617 + 6.017 + 0.617 + 6.0017 =?
Options- A. 6.2963
- B. 62.965
- C. 629.6357
- D. None of these Discuss
Correct Answer: 629.6357
Explanation:
617.00 6.017 0.617 + 6.0017 -------- 629.6357 ---------- 7.
If 144 = 14.4 , then the value of x is: 0.144 x
Options- A. 0.0144
- B. 1.44
- C. 14.4
- D. 144 Discuss
Correct Answer: 0.0144
Explanation:
144 = 14.4 0.144 x ⟹ 144 x 1000 = 14.4 144 x ⟹ x = 14.4 = 0.0144 1000 - 8. If 2994 ÷ 14.5 = 172, then 29.94 ÷ 1.45 =?
Options- A. 0.172
- B. 1.72
- C. 17.2
- D. 172 Discuss
Correct Answer: 17.2
Explanation:
29.94 = 299.4 1.45 14.5 = ❨ 2994 x 1 ❩ [ Here, Substitute 172 in the place of 2994/14.5 ] 14.5 10 = 172 10 = 17.2
- 9. 34.95 + 240.016 + 23.98 =?
Options- A. 298.0946
- B. 298.111
- C. 298.946
- D. 299.09 Discuss
Correct Answer: 298.946
Explanation:
34.95 240.016 + 23.98 -------- 298.946 --------
- 10.
The value of 0.1 x 0.1 x 0.1 + 0.02 x 0.02 x 0.02 is: 0.2 x 0.2 x 0.2 + 0.04 x 0.04 x 0.04
Options- A. 0.0125
- B. 0.125
- C. 0.25
- D. 0.5 Discuss
Correct Answer: 0.125
Explanation:
Given expression = (0.1)3 + (0.02)3 = 1 = 0.125 23 [(0.1)3 + (0.02)3] 8
Comments
There are no comments.
More in Aptitude:
Programming
Copyright ©CuriousTab. All rights reserved.
- 1.