Answer:
0.01 goes in the first box
0.10 goes in the second box
Therefore, the first equation is 0.01p + 0.10d = 1.50
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Reason:
The last part mentions "A penny is 0.01" which means $0.01 or 1 cent. The 0.01 is the coefficient of the variable p.
1 penny = $0.01
p number of pennies = 0.01p dollars
A similar situation happens with the dimes.