lianne started washing her clothes at 2:45 p.m. she finished at 5:25 p.m. how long did it take her to wash her clothes?

what is asked in the problem?
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what operation to be used to solve the problem ?

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what is the number sentence that represent your answer?
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which is the correct answer to the problem ?
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paki sagutan naman po yung mga mabuti pong kaibigan diyan sana po ay ma sagutin niyo po please tulungan niyo po ako..​