Question

Aman earns double relative to the previous day in every next day of his working. If he earns 10 rupee in the first day then his earning in 12th day will be

Answer 1

Answer:

Solution:-

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First day earning (a)= 3Rs

And he earns double every next day.

To find: The 10th day earning

From given,

Second day earning =2a=b=6=3(2) 2−1

Third day earning =2b=c=12=3(2) 3−1

Fourth day earning =2c=d=24=3(2) 4−1

nth day earning =3(2) n−1

Thus earning of 10th day will be

10th day earning =3(2)

10−1 =3(2)9

=1536Rs

Therefore 10th day earning will be 1536 Rs.

Hope it helps you dear!

Answer 2

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Solution:-

• First day earning (a)= 3Rs

• And he earns double every next day.

To find:

• The 10th day earning

From given,

Second day earning =2a=b=6=3(2) 2−1

Third day earning =2b=c=12=3(2) 3−1

Fourth day earning =2c=d=24=3(2) 4−1

nth day earning =3(2) n−1

Thus earning of 10th day will be

10th day earning =3(2)

10−1 =3(2)9

=1536Rs

Therefore 10th day earning will be 1536 Rs

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