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120 Bills because there are 12 months in a year and 10 × 12 = 120.

The total number of checks that a family needs to write in a year is 120. The number of checks in a year is a product of the number of checks in a month and the number of months in a year.

What are the different modes of bill payment?

The bills signify a liability of a person towards the expenses he/ she has incurred. Settlement of a bill can be through cash, check, online modes such as debit card, credit card, mobile wallets, and other modes.

A check refers to a document that is raised by the maker ordering the bank to pay a certain sum written on the check to the person on whose name the check has been drawn.

The number of checks in a month is 10.

We know that,

There are 12 months in a year.

Therefore total checks in a year are:

[tex]\begin{aligned} \rm Number\:of\:checks\:in\:a\:year &= \rm Number\:of\:checks\:in\:a\:month \times 12\\\\&= 10 \times 12\\\\&= 120 \:\rm checks\end[/tex]

Therefore the checks they need to write in a year are 120 checks.

Learn more about check here:

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