This P5 version of "Assumption" method is different because there is a deduction of value.
This question usually appears in paper 1 for P5 mid-year SA1 or SA2.
Calculator usage is not allowed.
Mr Guetta is a delivery rider.
He delivered 15 parcels on Monday.
For each parcel delivered on time, he will earn $5.
For each parcel delivered late, $3 will be deducted.
He received $59 for the parcels delivered on Monday.
How many parcels were delivered late?
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