Need help with parts (b) and (c) of this question
1 Answer
b) We have
\[12012\times \frac{1.5}{100}+5564 \times \frac{3.5}{100}+(x-17576)\times \frac{7}{100}= x \times \frac{5}{100}. \]
c) We need to solve the above equation for $x$:
\[180.18+194.74+\frac{7}{100}x-1230.32= \frac{5}{100}x \]
\[\Rightarrow (\frac{7}{100}-\frac{5}{100} )x=1230.32-(180.18+194.74)\]
\[\Rightarrow \frac{2}{100}x=855.40\]
\[\Rightarrow x=\frac{855.40 \times 100}{2}=42,770.\]
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This kind of questions should generally come with a bounty.
It’s from my 14 year old sons summer exam, can’t be that hard
It's a very elementary problem, but took me about 15 minutes to answer.
Thanks for answering @Savionf, very much appreciated