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Help me I need the answer on paper help me now
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15 votes
Help me I need the answer on paper help me now

Help me I need the answer on paper help me now-example-1
User Startuprob
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1 Answer

16 votes
16 votes

Answer:

a) k = 10 b) k = 7.5

Explanation:

a)

( 5k+ 20 ) + ( 7k + 40 ) = 180

12k + 60 = 180

12k = 120

k = 10

b)

40 + ( 12k + 10) + 180 - ( 8k + 80 ) = 180

50 + 12k + 180 - 8k - 80 = 180

50 + 12k -8k - 80 = 0

50 + 4k - 80 = 0

30 = 4k

k = 7.5

User Fgamess
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