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Sagot :
Answer:
Step-by-step explanation:
(104/x)+(30/100) cross multiply or
1040+3x
10x
im not sure the answer but do like terms and you should get it!! im in a rush sorry if im no help <3
Let cost price=x
Then,x(1+30%)=104
x(1+0.30)=104
1.30x=104
1.30-:-1.30x=104-:-130/100
X=104*100-:-130
X=80
Therefore,cost price of trumpet for $80
Then,x(1+30%)=104
x(1+0.30)=104
1.30x=104
1.30-:-1.30x=104-:-130/100
X=104*100-:-130
X=80
Therefore,cost price of trumpet for $80
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