An Almost Clean Sweep
In July, Minh’s family spends the month at their cottage. On July 1 st, Minh swept up 80 g of sand. a) If Minh continues sweeping up 80 g of sand each day, how many kg of sand will Minh sweep up after 7 days?
b) How much sand, in kg, will Minh sweep up by the end of July?
c) Actually, Minh’s broom is faulty. Alas, about a tenth of the sand ends up unswept. How much sand in total will Minh sweep up over the family’s month at the cottage?
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