tayybabyy8
27.07.2019 •
Mathematics
An alloy consists of silver and copper. the mass of silver is 14 2/7 % of the mass of copper. what is the percentage of copper in the alloy?
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Ответ:
Ответ:
No. of yellow balloons = r - b -
Step-by-step explanation:
Total number of balloons = r
No of blue balloons = b
Blue balloons are twice the no of green balloons. so
No. of green balloons =
No of yellow balloons = ( Total number of balloons ) - ( No of blue balloons ) - ( No. of green balloons )
⇒ No. of yellow balloons = r - b -