Question

The height of plant increased 65 cm to 71 cm in a week.Find the increase percent.

Answer 1

increase in height =71-65=6 cm
% increase=increase/ original ×100
% increse=6×100/65=7×20/13=140/13
= 10 whole 10/13

Answer 2

Hi friend!

Answer:

Increase = 6cm

Formula for increase/decrease percentage:
$\frac{c}{o} \times 100$
where c = the change in value (increase/decrease)
and o = original value

Here o = 65cm
c = (71 - 65) = 6cm

Increase % =
$\frac{6}{65} \times 100 \\ \\ = \frac{6 \times 20}{13} \\ = 120 \div 13 \\ = 9.23\%$

Therefore, increase percentage = 9.23%.

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