Question

Suppose three people ate a meal in a restaurant. The cost of each of their meals is m. One person intends to tip 10%, the second person intends to tip 15%, and the third person intends to tip 20%. Which expression represents the total amount that they'll pay?

Answer 1

Person 1:

$10\%m$
or

$0.1m$

Person 2:

$15\%m$

or

$0.15m$

Person 3:

$20\%m$

Or

$0.2m$

All together:

$0.1m + 0.15m + 0.2m$
Or

$(0.1 + 0.15 + 0.2)m$
Or

$0.45m$