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Lady_Fox [76]
3 years ago
11

a bag has a total of 120 notes in denominations of rs 2, rs. 5 and rs. 10. the total value of the notes in the bag is rs 760. if

there were twice as many notes rs. 5 , the total value of the notes will be 960. find the number of rs 10 notes in the bag?
Mathematics
1 answer:
Deffense [45]3 years ago
8 0
So there are three variables, rs2 label x, rs5 label y, rs10 label z
Lets write equeations using these variables. 
x+y+z=120  (<span>A bag has a total of 120 notes)
2x+5y+10z=760  (total value)
2x+5*2y+10z=960  (twice as many rs5)

3 variables, 3 independent equations will give solution. There are a fair few ways to solve this. </span>
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Answer:

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Step-by-step explanation:

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p(15p+7)=0

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zheka24 [161]

Answer:  25x² - 64

<u>Step-by-step explanation:</u>

  (5x + 8)(5x - 8)

=        5x(5x - 8)   +    8(5x - 8)

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=              \large\boxed{25x^2-64}

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3 years ago
If the sum of two numbers is 15 and their product is 50 what are they
Westkost [7]
Xy = 50
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x = 15 - y

xy = 50

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x = 5

Answer: the numbers are 5 and 10.

5 0
2 years ago
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