Answer:
27 units
Step-by-step explanation: 21 +6 = 27 they are 27 units apart
16 1/4 should be your answer.
Answer:
$17.64
Step-by-step explanation:
$15.50 and $5.50
with 20% off
and 5% sales tax.
take the 20% first.
(15.50 + 5.50) * ( 100 - 20) % = 21 *0.8 = $16.80
now add the tax
0.05 * 16.80 + 16.80 = $17.64
10 books cost $30. To figure it out, it's just 3 times the number of books. XD