1. if a mathematical expression consists of a series of operation, which of the following should be performed first?
a.Expression inside the groupings symbols
b.Addition and/or subtraction operations
c.Multiplication and/or division operations
d.Expression involving exponents

A. Identify the percentage (P),and the rate (R) in each item .
1. 50% of 36 is 9
2. 30% of 60 is 18
3. 60 is 24% of 250
4. 36 is 20% of 180

B. Identify the percentage (P), the bases (B) and the rate (R) in each item. if any of the P,B, or R is missing , represents it as N
1. 2 is what percent of 12?
2. 23% of 210 is what number?
3. what nunber is 22% of 30
4. what percent of 28 is 22?

C. Solve as indicate

1. 80 is what percent of each?
a.120
b.150
c.200

2. 100 is what percent of each?
a.150
b.175
c.350

3. 75 what percent of each?
a.225
b.250
c.500

4. if 80 is the percentage for each of the rates, find the base.
a.40%
b.60%
c.75%

5. what is the number which when multiplied by each rate results in 100
a. 40%
b.60%
c.75%

Plz sagutin ng maayos , Thank u ​