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- Question
- The numbers are such that the square of one is 224 less than 8 times the square of the other. If the numbers be in the ratio 3 : 4, the numbers are
Options- A. 3 , 6
- B. 4 , 8
- C. 6 , 8
- D. 6 , 4
- Correct Answer
- 6 , 8
ExplanationLet us assume the ratio term is r.
then the number will be 3r and 4r.
According to question,
(4r)2 + 224 = 8 x (3r)2
16r2 + 224 = 8 x 9r2
16r2 + 224 = 72r2
72r2 - 16r2 = 224
56r2 = 224
r2 = 224/56
r2 = 4
r = 2
First number = 3r = 3 x 2 = 6
Second number = 4r = 4 x 2 = 8 - 1. Find the odd word / letter / number from the given alternative
Options- A. POCG
- B. KLIZ
- C. BUDX
- D. FQMV Discuss
- 2. At 30% discount the selling price of an article is Rs 1050. What is the selling price (in Rs) if the discount is 15%?
Options- A. 1200
- B. 1175
- C. 1100
- D. 1275 Discuss
- 3. At present, the ratio between the ages of Arun and Harish is 4:3. After 6 years, Arun's age will be 26 years. What is the age of Harish at present ?
Options- A. 15 years
- B. 16 years
- C. 18 years
- D. 21 years Discuss
- 4. A dishonest shopkeeper professes to sell his groceries at his cost price but uses a false weight of 900 grams for each kilogram. Find his gain percentage.
Options- A. 91/9 %
- B. 100/9%
- C. 100/11 %
- D. 95/9% Discuss
- 5. If secA + tanA = x, then the value of x is
Options- A. cosA/(1 + sinA)
- B. ?[cosA/(1 - sinA)]
- C. ?[cosA/(1 + sinA)]
- D. cosA/(1 - sinA) Discuss
- 6. A square playground measures 1127.6164 sq.m. If a man walks 2 9/20 m a minute, the time taken by him to walk one round around it is approximately.
Options- A. 50.82 min
- B. 54.82 min
- C. 54.62 min
- D. 50.62 min Discuss
- 7. Find the odd word / letter / number from the given alternative
Options- A. 36 - 48
- B. 56 - 44
- C. 78 - 66
- D. 33 - 64 Discuss
- 8. 50% of a = b, then b% of 40 is the same as _________ of a.
Options- A. 0.25
- B. 0.16
- C. 2
- D. 0.2 Discuss
- 9. If Riya's age is four times the age of Siya and if Riya's age is 24 yrs , find the age difference between Riya and Siya ?
Options- A. 2 yrs
- B. 12 yrs
- C. 18 yrs
- D. 6 yrs Discuss
- 10. The volume of a cube is 166.375 cm3. Find its side (in cm).
Options- A. 6.5
- B. 4.5
- C. 7.5
- D. 5.5 Discuss
More questions
Correct Answer: FQMV
Correct Answer: 1275
Correct Answer: 15 years
Explanation:
Let the present ages of Arun and Harish be 4x and 3x years respectively.
Then, 4x + 6 = 26 => x = 5
Harish's age = 3x = 15 years.
Correct Answer: 100/9%
Explanation:
Shopkeeper sells at CP using weight of 900 gm instead of1 kg
So, 1000gm ?900 gm = 100gm
?100/900 X 100
?100/9 %
Correct Answer: cosA/(1 - sinA)
Correct Answer: 54.82 min
Correct Answer: 33 - 64
Correct Answer: 0.2
Correct Answer: 18 yrs
Explanation:
Let Siya's age = x
Then Riya's age = 4x
But given Riya's age = 24
=> 4x = 24 => x = 6
Hence Siya's age = 6 yrs
=> The age difference = 24 - 6 = 18 yrs.
Correct Answer: 5.5
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