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3 years ago

X and y are two positive numbers and y is three greater than x. the product of the numbers is 130. find the smaller number, x.

1 answer:

7 0

Xy=130
y=3+x

x(3+x)=130
x²+3x-130=0
(x+13)(x-10)=0
x= -13 or 10

since the question says X and Y are positive we just dismiss-13

x=10
and y=13

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bearhunter [10]

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4 years ago

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answer = CI = 3108 RUPEES

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i am doing the method in which u find the simple interest of first year then second year.

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SI = 2700 X 20 X 2 / 3 X 100 ( RATE OF INTEREST IS 20 / 3)

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SI FOR SECOND YEAR =

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or u can solve be the method

CI = amount - principle

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***************************************

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