Question 13
VariationIf P is directly proportional to √Q; P = 20 when Q = 4. Find Q when P = 100
- A.200
- B.300
- C.100
- D.400
Show the answer and explanation
Answer: C (100)
Explanation
P = k√Q: 20 = 2k, so k = 10. 100 = 10√Q gives √Q = 10, Q = 100.
If P is directly proportional to √Q; P = 20 when Q = 4. Find Q when P = 100
Answer: C (100)
P = k√Q: 20 = 2k, so k = 10. 100 = 10√Q gives √Q = 10, Q = 100.