17 trees = 1 tonne paper. Forest has 221 trees. (i) Fraction for:
(a) 5 t (b) 10 t
(ii) To save 7/13 forest, paper?
(a) \(\tfrac{5}{13}\)
(b) \(\tfrac{10}{13}\)
(ii) 7 tonnes
221 ÷ 17 = 13. (a) 5/13, (b) 10/13. (ii) Save 7/13 of 13 = 7 tonnes.