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).
Answer: what??
Step-by-step explanation:
Answer:
-3 1/3 or -10/3
Step-by-step explanation:
5/1 × -2/3= -10/3 or -3 1/3
you multiply the numerators, 5 and -2 together and get -10. you multiply the denominators, 1 and 3 to get 3. Therefore making the improper fraction -10/3, which is also the mixed fraction -3 1/3.
Answer:
1.5x0.41=2.091 that the answer
17+4=21
21 divided by 3= 7
17 dollars for tickets
21-4=17
so your answer is 21 he has to sweep the floor 21 times to get tickets