At what simple interest rate was 312, 000 invested if it earned an interest of 24, 102 just after 1.5 years?

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(☐)^′	`ddx`	∂∂`x`	∫	∫_□^□	lim	∑	∞	`θ`	(`f` ◦ `g`)	`f`(`x`)

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(☐)^′	∂∂`x`	∫_□^□	lim	∑	sin	cos	tan	cot	csc	sec

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The sum of two numbers is 249 . Twice the larger number plus three times the smaller number is 591 . Find the numbers.

Solution

The numbers: 156, 93

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Solution steps

One step at a time

Represent the numbers with x and y:

number 1 : x

number 2 : y

A.T.Q.:

x+y=249

2x+3y=591

x+y=249, 2x+3y=591 : x=156, y=93

The numbers: 156, 93

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×▭▭	(	1	2	3	−	`x`
▭ \|▭	)	.	0	=	+	`y`

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At what simple interest rate was 312, 000 invested if it earned an interest of 24, 102 just after 1.5 years?

Solution

Solution steps

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