If a box of 55 syringes costs $660.00, which of the following is the cost of four syringes?
$51.00
$26.00
$32.00
$48.00
Correct Answer : D
: the question requires we find the cost of four syringes.
If we let x be the cost of four syringes, then we set up a proportion equation with cost as numerator and number of syringes as denominator. The proportion equation becomes
Cross-multiply to solve for x
Rearranging the above
Divide both sides of the equation by 55
Thus, the cost of 4 syringes is $48.
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