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steposvetlana [31]
3 years ago
8

the market bought grapes for $0.87 a pound and sold them for $1.15 a pound what is the percent of increase rounded to the neares

t tenth A.)24.3% B.)22.0% C.)32.2% D.)22.1%
Mathematics
2 answers:
Umnica [9.8K]3 years ago
6 0
C.) 32.2% is your answer






kherson [118]3 years ago
3 0
((1.15 - 0.87)/0.87)*100% = 32.2%
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Two bowls and one cup weigh 800 grams. One bowl and two cups weigh 700 grams. Find the weight of the bowl and the cup
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Answer:

\large \boxed{\textbf{Bowl = 300 g; cup = 200 g}}  

Step-by-step explanation:

 Let b  = the mass of a bowl  

and c = the mass of a cup  

We have two conditions:  

\begin{array}{lrcl}(1) &2b + c  & = & 800\\(2) & b + 2c & = & 700\\\end{array}

Calculations:  

\begin{array}{lrcll}(3) & 4b + 2c &=  & 1600&\text{ Multiplied (1) by 2}\\& 3b & = & 900&\text{Subtracted (2) from (3)}\\(4) & b & = & \mathbf{300}&\text{Divided each side by 3}\\ & 600 + c & = & 800&\text{Substituted (4) into (2}\\ & c & = & \mathbf{200}\\\end{array}\\\text{The mass of a bowl  is $\large \boxed{\textbf{300 g}}$ and that of a cup is $\large \boxed{\textbf{200 g}}$}

Check:

\begin{array}{rlcrl}2(300) + 200& =800 & & 300 + 2(200) & = 700\\600 + 200 & = 800& & 300 + 400 & = 700\\800 & = 800& & 700 & = 700\\\end{array}

OK.

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3 years ago
What number is 20% of 40?
VladimirAG [237]

Answer:

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Step-by-step explanation:

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Evgesh-ka [11]

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