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hichkok12 [17]
3 years ago
7

Please help!

Mathematics
1 answer:
Aloiza [94]3 years ago
7 0

Answer:14%

Step-by-step explanation:

final grade score=a

20% of a=15

20/100 x a=15

20a/100=15

Cross multiply

20a=15 x 100

20a=1500

Divide both sides by 20

20a/20=1500/20

a=75

B% of 75=10.5

B/100 x 75=10.5

75B/100=10.5

Cross multiply

75B=10.5 x 100

75B=1050

Divide both sides by 75

75B/75=1050/75

B=14

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