Question

It takes 17 full specific types of trees to make one tonne of paper. If

there are 221 such trees in a forest, then

(i) What fraction of the total number of specific types trees of the

forest will be used to make 4 tonnes of paper?

(ii) How much of paper has to be saved in order to save 9/13 part of

the total number of specific types trees of the forest?​

Answer 1

Answer:

Given:

i)  Trees required to make 1 ton paper:17

Trees required to make 4 tonnes paper=17*4=68

fraction= $\frac{68}{221} =\frac{4}{13}$

ii)  Fraction of trees to be saved = 9/13

Number of trees to be saved=$\frac{9}{13} *221$

                                                =153

Paper made by 153 trees = 153/17

                                          =9 tonnes

Thus 9 tonnes of paper is to be saved in order to 9/13th of the trees.

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