# 345 fasteners at \$4.15 per 100 will cost?

Relevance
• 345/4.15 = 100/x

345x = 415

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• 345 fasteners (\$4.15 / 100 fastener) = \$______

fastener top and bottom cancel)

= \$14.3175

rounding:

\$14.32

Source(s): Note: In the problem above, I'll typically have the converter in (parens). Converters = (1) If you want to learn the easy way to work problems like this, here's a very short 2 minute video on how to work 'unit cancellation' and conversion problems. https://www.youtube.com/watch?v=8jB-LaTGgq8 A 6 minute tutorial that’s more complete: https://www.youtube.com/watch?v=HRe1mire4Gc
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• \$34.50 per fasteners.

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• 345 fasteners at \$4.15 per 100 will cost \$14.32.

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• 4.15*345/100=14.3175=14.50

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• No other price schedule is given, so I suppose they are sold only by the hundred. In that case, the only way to procure 345 fasteners would be to buy 400.

price of 400 fasteners

= 4(\$4.15)

= \$16.60

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• At most stores, something prices by the hundred means you have to buy in hundreds. In that case, 4 boxes of 100 fasteners are needed, at a cost of 4 * 4.15 = \$16.60.

If you're allowed to buy a partial box, at the same price per fastener, then start by dividing:

4.15 / 100 = \$0.0415 or 4.15 cents per fastener

0.0415 * 345 = 14.3175 . . . . unrounded total price

Round that to the nearest cent to get \$14.32

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• 3.45 X \$4.15 = \$14.32

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• \$14.32. I have to make this answer 15 characters or it won't submit.

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• Anonymous
6 months ago

Use a ratio, let X be the price

\$4.15 / 345 = X / 100

Solve for X

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