Answer:
$5
Step-by-step explanation:
Just use simultaneous equations to solve this problem.
Let cost of pens = x and cost of pencils = y:
217 x + 131 y = 913
131x + 217y = 827
Solving these 2 equations you get: x = 2 and y = 3
Hence, cost of one pen and one pencil = 2 + 3 = 5 rupees
This means that for every 5 kilograms of fruit, you'll get 3 kilograms of sugar.
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Let's divide 8 into 5 parts. 8/5 = 5/5 + 3/5 = 1.0 + 0.6 = 1.6
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1.6 x 3 = 3 + 1.8 = 4.8
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This means that within 8 kg of fruit you'll find 4.8 kg of sugar.
So before we can solve using the quadratic formula, we have to set the equation to zero. We can do that by adding 2 on both sides of the equation
Now we can use the quadratic formula, which is , with a=x^2 coefficient, b=x coefficient, and c=constant. We can form the equation as such:
Firstly, solve the exponents and the multiplications:
Next, do the addition within the radicals (these will be your exact solutions. but I'll solve for the decimal form as well.):
Next, solve for the rest on your calculator, and your answers will be (rounded to the thousandths) y = -0.463, 0.863
Answer:
3/12 for red
4/12 for blue
Step-by-step explanation:
3 is red
5 is green
4 is blue
3 + 5 + 4 is 12 so it is out of 12 altogether
3/12 for red
4/12 for blue