Question

Kabir's mother keeps a record of his height on each birthday. When he was one
year old, his height was 70 cm, at 2 years he was 80 cm tall and 3 years he was
90 cm tall. His aunt Meera was studying in the 10th class. She said, " it seems like
Kabir's height grows in Arithmetic Progression”. Assuming this, she calculated
how tall Kabir will be at the age of 15 years when he is in the 10" ! She was
shocked to find it. You too assume that Kabir grows in A.P. and find out his height at the age of 15 years​

Answer 1

Answer:

210 cm

Step-by-step explanation:

since we have to calculate height in 15 th year so let it be as 15 th term of a.p

since n= a + (n-1)d

therefore , height= 70+ (15-1)×10

=70 + (14×10)

=70+140

=210 cm