Question

If 5a = 3125, then the value of 5(a - 3) is:
A.25
B.125
C.625
D.1625

Answer 1

$\huge{\mathcal{Hi\: there!}}$

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Given :

5a = 3125

⇒ a = $\mathsf {\frac {3125}{5}}$

⇒ a = 625

Now,

5 ( a - 3 )

Putting the value of a here, we get ;

⇒ 5 ( 625 - 3 )

⇒ 5 ( 622 )

⇒ 5 × 622

⇒ 3110

Hence, the right answer is 3110.

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Answer 2

Given,

5a = 3125

When we  transfer  5  to RHS, we  will have  to divide it  with 3125,

a = 3125/5

a = 625

Now,

To Find:-

5(a-3)

Putting  value of  a =625

5(a-3) = 5(625 - 3)

          = 5 × 622

         = 3110

5(a-3) = 3110