Question

a mango tree was planted 2 years ago the rate of its growth is 20% per annum if at present the height of the tree is 162 cm what it was when the tree was planted​

Answer 1

Answer:

2 years = 24 months

20/100 × x × 24 = 162

              24x/5   = 162

                     x    = 162 × 5 / 24

                           =  810/24

                           =  405/12

                           =  33.75

thus, the height of the tree two years ago was 33.75 cm

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