Question

111 trees are planted every time a girl child is born in piplantri.the number of trees in december 2018 was 5000.assuming that in the year 2019, a girl child is born every month. then,in which month will the numder of trees be 6221?

Answer 1

Answer:

6221-5000= 1221/111

11

On the 11th month

Answer 2

At 11th month the number of trees will equal to 6221

Given:

111 trees are planted every time a girl child is born in piplantri

The number of trees in december 2018 was 5000

Assume that in the year 2019, a girl child is born every month.

To find:

If a girl child is born every month of 2019, then in which month will the number of trees be 6221

Solution:

Given that number of trees in 2018 is 5000

If a girl child is born in 1st month of 2019

Then number of tree = 5000+111 = 5111

At 2nd month, number of trees  = 5000+2(111) = 5222

At 3rd month, number of trees = 5000+3(111) = 5333  

Let at nth term the number of tree = 6221

⇒ 5000+n(111) = 6221

⇒ n(111) = 1221

⇒ n = 1221/111 = 11

Therefore, at 11th month the number of trees will equal to 6221

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