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The value of q that satisfies 3p+5q=523^p + 5^q = 52 and 3p−1+5q−1=143^{p-1} + 5^{q-1} = 14 will be

Solution

✅ Correct Option: 4

Try q=2q = 2 in the first equation:

3p+52=523^p + 5^2 = 52

3p+25=523^p + 25 = 52

3p=273^p = 27

3p=333^p = 3^3

p=3p = 3


Substituting p=3p = 3 and q=2q = 2 in the second equation:

33−1+52−1=143^{3-1} + 5^{2-1} = 14

32+51=143^2 + 5^1 = 14

9+5=149 + 5 = 14

This holds true, so q=2q = 2.

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