Financial Maths Revision

Express 30.6 out of 90 as a percentage.

Express 172.8 out of 270 as a percentage.

Find 31% of $140.

Find 26% of $980.

Increase $745 by 1%.

Increase $25 by 82%.

Find the percentage change when a plant grows from 60 cm to 150 cm.

Find the percentage change when a plant grows from 110 cm to 130 cm (round to two decimal places).

The cost of petrol rises by 3% over a week to $1.82 a litre. What was the price at the start of the week? Round to the nearest cent.

The cost of petrol rises by 11% over a week to $2.1 a litre. What was the price at the start of the week? Round to the nearest cent.