30 + 20 + 30 + 20 = 100
30 x 10% = 3 + 30 = 33
20 x 5% = 1 + 20 = 21
33 + 21 + 33 + 21 = 108
100 / 108 = 0.925925926 = 0.93 = 93%
100% - 93% = 7%
7% increase
Cos28=11/x
x=11/cos28
it will be c
Answer:
Step-by-step explanation:0.04
Percent decrease : (original number - new number) / original number...x 100
percent decrease = (25 - 18) / 25....x 100
percent decrease = 7/25 * 100
percent decrease = 700/25 = 28%
