Question

increase 400 by 15%​

Answer 1

$400 \times (1+15\%)$

$400 \times (1+15/100)$

$400 \times (1.15)$

$\displaystyle =460$

Answer 2

Step-by-step explanation:

15/100*400

=60.

then by adding 15% to 400

=460.