點解而家d P5 math咁難? 呢題我當場唔識
Nancy has 3 times buttons more than Mary. Nancy uses 4 buttons per day. Mary uses 5 buttons per day. When Mary has 0 buttons, Nancy still has 88 buttons.
a) How many days does Mary uses all buttons?
b) How many buttons did they have altogether at first?
補完習去等271 la,
我明明排第1 ga
但連門都唔開比我....
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