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人気のある Word Problems >

he sum of two numbers is 21. Three times the larger is equal to four times the smaller.Find them.

解

h e s u m o f tw o n u mb ers i s 21. T h ree t im es t h e l a r g er i s e q u a l t o f o u r t im es t h e s ma ll er . F in d t h e m .

解

The numbers : 12, 9

解答ステップ

Represent the numbers with

x and y

:

number 1 : x

number 2 : y

A.T.Q.:

x + y = 21

3 x = 4 y

x + y = 21, 3 x = 4 y : x = 12, y = 9

The numbers : 12, 9

人気の例

The sum of seven times a number and twenty-seven is forty.How much would you need to deposit in an account now in 順序 to have 3000 in the account in 10 years? Assume the account earns 3% interest compounded monthly.Nineteen less than five times a number is equal to 11 more than three times the number.Find two consecutive whole numbers that sqrt(43) lies between.Sophie has 40 in an account. The interest rate is 5% compounded annually.To the nearest cent, how much interest will she earn in 3 years?