Answer :
The amount of money he will earn for an 8-hour shift is Php448
Let the amount of money he earns be A
Let the number of hours worked is "h"
If the amount of money he earns varies directly to the number of hours worked is expressed as:
A = kx
k = A/x
GIven that A = Php 280.00, x = 5 hours
k = 280/5
k = 56
If x = 8 hours, the amount of money A = kx
A = 56 * 8
A = Php448
Hence the amount of money he will earn for an 8-hour shift is Php448
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