Find the ratio in which rice at Rs. 7.20 a kg be mixed with rice at Rs. 5.70 a kg to produce a mixture worth Rs. 6.30 a kg.
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
By the rule of alligation:
|
Cost of 1 kg of 1st kind Cost of 1 kg of 2nd kind |
||
| 720 p | Mean Price 630 p |
570 p |
| 60 | 90 | |
Required ratio = 60 : 90 = 2 : 3.
[B].
[C].
[D].
Answer: Option B
Explanation:
| Dividend on Rs. 20 = Rs. | 9 | x 20 | = Rs. | 9 | . | ||
| 100 | 5 |
Rs. 12 is an income on Rs. 100.
| Rs. | 9 | is an income on Rs. | 100 | x | 9 | = Rs. 15. | ||
| 5 | 12 | 5 |
[B].
[C].
[D].
Answer: Option D
Explanation:
Let B’s capital be Rs. x.
| Then, | 3500 x 12 | = | 2 | ||
| 7x | 3 |
14x = 126000
x = 9000.
[B].
[C].
[D].
Answer: Option C
Explanation:
The pattern is 1 x 2, 2 x 3, 3 x 4, 4 x 5, 5 x 6, 6 x 7, 7 x 8.
So, the next number is 8 x 9 = 72.
[B].
[C].
[D].
Answer: Option D
Explanation:
3251 Let 4207 – x = 3007
+ 587 Then, x = 4207 – 3007 = 1200
+ 369
—-
4207
—-
[B].
[C].
[D].
Answer: Option B
Explanation:
Each of the numbers except 72 is a perfect square.
[B].
[C].
[D].
Answer: Option D
Explanation:
Divisor = (5 x 46) = 230
| 10 x Quotient = 230 = | 230 | = 23 |
| 10 |
Dividend = (Divisor x Quotient) + Remainder
= (230 x 23) + 46
= 5290 + 46
= 5336.