a baker has a number of cakes that cost $10 each and three times as many tarts that cost $6 each. If the total cost of cakes and tarts is $420, find the number of tarts the baker has.
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Step-by-step explanation:
- cost of each cake = $10
- cost of each tarts = $6
- total cost of cakes and tarts = $420
given,
- 3 times as many tart = 3×10= 30
- so,
- 420 - 30 = 390
- cost of tart is $30
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