Answer:
300 ≥ 40 + 80 + 120 + x
x ≥ 60
Explanation:
Monday = 40 toys
Tuesday = 2(40) = 80 toys
Wednesday = 3(40) = 120 toys
Thursday = x toys
At least means ≥
300 ≥ 240 + x
300 - 240 ≥ x
60 ≥ x
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