Question

Increase £700 by 15%

Answer 1

10% = 70
5% = 35
15% = 105
700+105= 805

Answer 2

Increase £700 by 15% means: 700 + 15% of 700
= 700 + 0.15*700
= 700 + 105
= £805

Done... :)

I hope I helped you.