If $18$ pen cost $$1.25$ , then what is the cost of $60$ dozens pen?

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Answer 1 · 2017-04-29T05:13:32

Total cost of $60$ dozen pens is $$50$

One dozen pens mean $12$ pens and hence $60$ dozens pen mean $60xx12=720$ pens.

As $18$ pens cost $$1.25$

$1$ costs $$1.25/18$

and $720$ pens cost $$1.25/18xx720$

= $$1.25/cancel18^1xxcancel720^40$

= $$1.25xx40=$50$

If 1818 pen cost $1.25$1.25, then what is the cost of 6060 dozens pen?