First, write this as an inequality.
We need to isolate , so add on both sides of the equation.
Answer:
a) 30%
b) 280
Step-by-step explanation:
a) 3/10 = 30/100 = 30%
b) 30% = 0.3
0.3 × 400 = 120
400 - 120 = 280
hope this helps you look it once.
1.95