Kabir's mother keeps a record of his height on each birthday. When he

1.	Kabir's mother keeps a record of his height on each birthday. When he was oneyear old. his height was 70 cm, at 2 years he was 80 cm tall and 3 years he was00 cm tall. His ount Meera was studying in the 10th class. She said. 'it seems likeabir's height grows in Arithmetic Progression". Assuming this, she calculatedhow tall Kabir will be at the age of 15 years when he is in the 10 She wasshocked to find it. You too assume that Kabir grows in A.P. and find oat hisheight at the age of 15 yearsnce is
Answer» As height of kabir increasing in AP which is given by70, 80, 90......... Here, a = 70 and d = 80 - 70 = 10 As we know nth term of an APan = a + (n - 1)d Then,a15 = a + 14d = 70 + 140a15 = 210 Therefore, age of Kabir at the of 15 years will be 210 cm

Kabir's mother keeps a record of his height on each birthday. When he was oneyear old. his height was 70 cm, at 2 years he was 80 cm tall and 3 years he was00 cm tall. His ount Meera was studying in the 10th class. She said. 'it seems likeabir's height grows in Arithmetic Progression". Assuming this, she calculatedhow tall Kabir will be at the age of 15 years when he is in the 10 She wasshocked to find it. You too assume that Kabir grows in A.P. and find oat hisheight at the age of 15 yearsnce is

Answer»

As height of kabir increasing in AP which is given by70, 80, 90.........

Here, a = 70 and d = 80 - 70 = 10

As we know nth term of an APan = a + (n - 1)d

Then,a15 = a + 14d = 70 + 140a15 = 210

Therefore, age of Kabir at the of 15 years will be 210 cm