Write the number before the decimal point as the whole number and the bit after the decimal point as a fraction over 100, then reduce to lowest terms:
9.45 = 945/100 = 99/20
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189
d = 2q - 18; 10d + 25q = 945 10(2q - 18) + 25q = 945 20q - 180 + 25q = 945 45q = 1125 q = 25 You have 32 dimes ($3.20) and 25 quarters ($6.25)
Yes. 945/9 = 105
118.125
945/5=189