Let the money Trevor had before purchase be x.
After his purchase, he has no money left.
So, x - 27 = 0
x = 27.
Hence, Trevor had $27 before his purchase.
From the given photograph in the problem above, the cost of each macaras is $14, each set of clave cost $5. Lastly, each djembe drum costs $16. If we let x be the number of djembe drum sold, our equation would be,
326 = 12(14) + 6(5) + x(16)
Simplifying the right side of the equation,
326 = 198 + 16x
F and E are congruent with the figure above
