1.

The height of a tree increases every year by 1/5 times. If the present height of the tree is 250 cm, find its height after 3 years

Answer»

after 1 year,

height of tree = 250cm + (1/5)250cm

= 250 + 50 = 300cm

After 2 years,

height of tree = 300 + (1/5)300cm = 360cm

After three years,

height of tree = 360 + (1/5)360cm = 360 + 72

= 432cm (or) 4.32m



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