I cant solve this word problem:

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> > Courier charges to a certain destination are $65$ cents for first $250$ grams and $10$ cents for each additional $100$ grams or part thereof. What could be the weight of package for which charge is $\$ 1.55$ ?
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I am solving it as:

$155 $cents = $65 + 90$ = $250$ grams + $900$ grams (since $10$ cents is for $100$ grams)

I get the answer $1150$ but the answer is suppose to be $1145$.