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If 2^(2x - y) = 16 and 2^(x + y) = 32 ...

If ` 2^(2x - y) = 16 and 2^(x + y) = 32 ` the value of xy is

A

`x : 9 =4`

B

`9 : x=4`

C

`x : 17 = y : 7`

D

`6 = y : 6`

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The correct Answer is:
A
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ARIHANT SSC-RATIO AND PROPORTION-EXERCISE BASE LEVEL QUESITONS
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  2. If P^2 + 4 Q^2= 4PQ , then determine P : Q

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  3. If 2^(2x - y) = 16 and 2^(x + y) = 32 the value of xy is

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  4. If 10 % of (A + B)= 50 % of (A-B) , then find A : B

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  5. If a : b= c : d = e:i = 1:2 , then find (3a + 5c + 7e): (36 + 5d + i7)...

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  6. If x : y = 7 :5 , then what is the value of (5X -2y) : (5X + 2y)

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  7. If a, b, c, d, e are in continued proportion, then a/e is equal to:

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  8. If 2A = 3B = 4C, the find A : B C .

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  9. In a certain school, the ratio of boys to girls is 7 : 5. If there are...

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  10. If a+b:b+c:c+a = 6:7:8 anda + b+ c =14, then find c.

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  11. The quantity that must be added to each term of a : b,so as to make it...

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  12. One-half of a certain number is equal to 65% of the 2nd number. Find t...

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  13. The ratio between two numbers is 3 : 4. If each number is increased by...

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  14. From each of two given numbers, half the smaller number is subtracted....

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  15. Two numbers are in the ratio of 4 : 7. If 5 is subtracted from each, t...

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  16. Two numbers are in the ratio 2 : 3: . If 9 is added to each number, t...

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  17. The total number of students in a school is 2140. If the number of gir...

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  18. The total weight of Sanjay and Suresh is 120 kg. If Sanjay weighs 30 k...

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  19. In a school , the ratio of boys and girls is 4:5. When 100 girls leave...

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  20. In a class, the number of boys and girls is in the ratio of 4 : 5. If ...

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