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?
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Answer:
Trees to save
=713×Total number of trees in a forest
=713×221
=7×17
=119 trees .
Paper we have to save
=117×119
=7
tonne paper .
7
tonne of paper we have to save .
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