You have to formulate equations for this problem.
Let S = Science score
M = Math score
C =
Chemistry score
To illustrate the given:
0.9S = 0.75M
0.9S = 0.8C
You are given that Karen’s Math score is 96 marks. You have
to substitute the Math score to the first equation.
0.9S = 0.75(96)
0.9S = 72
S = 80
Therefore, Karen’s Science score is 80. Now, you have to
substitute the Science score to the second equation.
0.9(80) = 0.8C
0.8C = 72
C = 90
So, Karen’s Chemistry score is 90.
Therefore, the total score of the 3 subjects is 266 (96 + 80
+ 90).
How to:
a+b-mx=0
a+b=mx
(a+b)/x=m
Her weekly sales is X dollars
10% as a decimal is 0.10
Total commission is 0.10X ( 10% times weekly sales)
You then need to add that to her base pay of $140.
The equation is: w = 0.10x + 140
Answer:
yes
Step-by-step explanation:
Answer:
No.
Step-by-step explanation:
4/5, when changed to a decimal, is a terminated decimal:
(4/5)(20/20) = 80/100 = 0.80
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