Question
PSLE
Gwen had toy masks for sale. In the morning, she sold 17 of the toy masks. In the afternoon, she sold 310 of the remaining toy masks. After that, there were 105 toy masks left. How many toy masks did Gwen have at first?
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PSLE
Gwen had toy masks for sale. In the morning, she sold 17 of the toy masks. In the afternoon, she sold 310 of the remaining toy masks. After that, there were 105 toy masks left. How many toy masks did Gwen have at first?