Answer:$45
Step-by-step explanation:
Let h be the number
6.4% of h=2.88
6.4/100 x h=2.88
6.4/100=0.064
0.064 x h=2.88
Divide both sides by 0.064
(0.064 x h)/0.064=2.88/0.064
h=45
The number is 45
