Question

A tree in each year grows 4cm less than it did in the previous year. If it grows 1m in the first year then in how many years will it have ceased growing?

Answer 1

Answer:

26 years

Step-by-step explanation:

Growth in first year = 1m = 100cm =a

Successive decrease in growth = (-4cm)=d

Growth in final year = 0cm=a'

Using A.P.,

a' = a + (n-1)d

0 = 100 + (n-1)(-4)

-100 = (n-1)(-4)

( n-1)= 25. [ (-100)/(-4)=25 ]

n = 25+1

n=26

Hope it helps

Answer 2

Answer:ans is 26

Step-by-step explanation: hope it helps you