Question

Decrease £200 by 25%

Answer 1

£150

Explanation:

25% means 25 per hundred, and decreasing 200 by 25% means that we should subtract 25% of 200, from 200:

25% · 200

=
`(25)/(100)` · 200

=
`(1)/(4)` · 200

= 50

⇒ 200 - 25% · 200

= 200 - 50

= 150

Alternatively, decreasing by 25% is the same as keeping 75%

(as 100% - 25% = 75%)

75% · 200

=
`(3)/(4)` · 200

= 150

Answer 2

£150

Explanation:

£200 is 100%. If you decrease it by 25%, you end up with 75% of £200.

75% of £200 =

= 0.75 × £200

= £150