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amm1812
3 years ago
11

I gave my brother 1/5 of my candy, 1/4 to my friend and had 11 pieces left over. How many pieces did I give my brother?

Mathematics
1 answer:
AnnyKZ [126]3 years ago
4 0

x = total number of candies

\bf \stackrel{\textit{my brother}}{\cfrac{1}{5}x}+\stackrel{\textit{my friend}}{\cfrac{1}{4}x}+11~~=~~\stackrel{\textit{total}}{x} \\\\\\ \stackrel{\textit{multiplying both sides by }\stackrel{LCD}{20}}{20\left( \cfrac{x}{5}+\cfrac{x}{4}+11 \right)=20(x)}\implies 4x+5x+220=20x\implies 9x+220=20x \\\\\\ 220=11x\implies \cfrac{220}{11}=x\implies 20=x~\hspace{10em}\stackrel{\textit{to my brother}}{\cfrac{20}{5}\implies 4}

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ioda

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6 0
3 years ago
The cost of 12 oranges and 6 apples is $5.38 Eight oranges and 5 apples cost $3.68 Find the cost of each
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Let the oranges cost = x

Let the apples cost = y

According to given conditions, equation becomes:

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3 0
4 years ago
1.1.13
Thepotemich [5.8K]

Answer:

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7 0
4 years ago
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