Answer:
420.00
Explanation:
Gross amount = Amount with tax
Net amount = Amount without tax
Gross amount = Net amount + 20% × Net amount
(1 + 20%) × Net amount
(1 + 20%) × 350
(100% + 20%) × 350
120% × 350
120/100 × 350
1.2 × 350 = 420
Added tax = Gross amount - Net amount
= 420 - 350 = 70
The correct way it should be
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