In a production lot, 20% of widgets are blue and the rest are black. One-half of widgets are made of silver and the rest

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In a production lot, 20% of widgets are blue and the rest are black. One-half of widgets are made of silver and the rest are made of gold. If 10% of the widgets are silver and blue, and 80 are black and gold, how many total widgets are there?

A. 140
B. 160
C. 180
D. 200
E. 250


OA D

Source: Veritas Prep

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BTGmoderatorDC wrote:
Tue Aug 02, 2022 5:19 am
In a production lot, 20% of widgets are blue and the rest are black. One-half of widgets are made of silver and the rest are made of gold. If 10% of the widgets are silver and blue, and 80 are black and gold, how many total widgets are there?

A. 140
B. 160
C. 180
D. 200
E. 250


OA D

Source: Veritas Prep
\(\dfrac{x}{5} - \dfrac{x}{10} = \dfrac{x}{2} - 80\)
\(x = 200\)

Therefore, D