Answer:
a
Step-by-step explanation:
Answer:
$60.
Step-by-step explanation:
Cost price= $50
Selling price = $80
Percentage markup = Gain/Cost price x 100%
=30/50x100
=$60.
We want 4/5 of a number to be 144. This means that

Multiplying both sides by 5/4, we have

C- 5 less than 6 times some number.
5 - 6t