Question

10. Find the percentage change in each case
(i) 30 to 32
(iv) 20 to 18
(ii) 18 g to 22.5 g
(v) 4 m to 3 m
(iii) 400 to 840
(vi) 150 to 142.5​

Answer 1

$(32 \times \frac{30}{30} \times 100) \\ ( \frac{62}{30} \times 100) \\ \frac{620}{3} \% \\ 6 \times \frac{2}{3} \% \: increase$

Answer 2

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