A company received $an$ invoice for $$3155\mathrm{.}22$ dated October $9$ with terms $7\frac{?}{15},3\frac{?}{30},\frac{n}{60.}$

$(a)If$ the invoice $is$ paid $on$ October $20,$ how much $istobe$ paid?

$(b)If$ the invoice $is$ paid $on$ November $6,$ how much $istobe$ paid?

$(c)If$ the invoice $is$ paid $on$ December $5,$ how much $istobe$ paid?

Question content area bottom

Part $1$

$(a)$ The amount $tobe$ paid $on$ October $20is$ $

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enter your response here.

Ensure that you have deducted the appropriate discount from the invoice amount