Answer:
decrease = 26.04
increase = 29.96
Explanation:
Decrease of £28.00 by 7% = £28 -(7% of 28)
= £28 - (0.07 × 28)
= £28 - 1.96
= £26.04
Increase of £28 by 7% = £28 +(7% of 28)
= £28 +(0.7 × 28)
= $28 + 1.96
= £29.96
Decrease £28 by 7% would be £26.04
and increase £28 by 7% would be £29.96