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(B) $1.30 (C)$1.80
(D) $2.20 (E)$2.70

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Eggs cost 90¢ a dozen. Peppers cost 20¢ each. An omelet consists of 3  [#permalink]

### Show Tags

24 Oct 2017, 06:33
Bunuel wrote:
Eggs cost 90¢ a dozen. Peppers cost 20¢ each. An omelet consists of 3 eggs and 1/4 of a pepper. How much will the ingredients for 8 omelets cost?

(A) $.90 (B)$1.30
(C) $1.80 (D)$2.20
(E) $2.70 This question can be solved using a whole batch or per omelette approach. I did both, to check math. Batch Each omelette requires 3 eggs and 1/4 of a pepper. So 8 omelettes require: 8 * 3 eggs = 24 eggs 8 * $$\frac{1}{4} =\frac{8}{4}=2$$ peppers So: 24 eggs and 2 peppers 1 dozen = 12 eggs; 2 doz = 24 eggs --Eggs cost 90 cents/dozen 90¢ * 2 dozen = 180 cents --Peppers cost 20 cents/ea 20¢ * 2 = 40 cents --(180 + 40) = 220 cents total 100 cents = 1 dollar To convert from cents to dollars, move the decimal point two places to the left. Or divide by 100 Or multiply by .01 Or, finally 220 cents * $$\frac{1dollar}{100cents}$$ = 2.20 dollars:$2.20

Per omelette
Each omelette requires 3 eggs and 1/4 of a pepper.

The cost per omelette:

There are 12 eggs in a dozen.

Each egg costs $$\frac{90¢}{12}$$ = 7.5 cents.
We need 3 eggs.
Total cost, eggs:
(7.5¢)(3) = 22.5¢

Each $$\frac{1}{4}$$ pepper costs $$\frac{20¢}{4}$$ = 5 cents
We need 1/4 pepper
Total: 5 cents

One omelette costs (22.5 + 5) =
27.5 cents

Eight omelettes cost (27.5¢ * 8) = 220 cents = \$2.20

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Joined: 05 Dec 2016
Posts: 6
Eggs cost 90¢ a dozen. Peppers cost 20¢ each. An omelet consists of 3  [#permalink]

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24 Oct 2017, 09:17
Easy calculation
Cost of one omelet = Cost of one egg + pepper

Cost of one egg = 90/12
Cost of pepper = 5

Eggs used per omelet = 3

Cost of 8 egg omelet = ( (90/12)*3 + 5)*8
= ((90/4)+5)*8
= (110/4)*8
= 22.00

Ans - D

This is to avoid calculations in points..
Eggs cost 90¢ a dozen. Peppers cost 20¢ each. An omelet consists of 3 &nbs [#permalink] 24 Oct 2017, 09:17
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