Thread: Decimal Places

A Homework Question That We Are Struggling With - Any Answers??
1. Use The Clues To Find The Length Of Each Throw. Each Throw Is A Four Digit Number Of Metres.
Part One
*. The Tens Digit Is The Same As The Hundreths Digit.
*. The Units Digit Is The Same As The Tenths Digit.
*. The Units Digit Is Four Less Than The Tens Digit.
*. The Sum Of The Digits Is 20.
Part Two
*. The Tens Digit Is Twice The Units Digit.
*. The Units Digit Is The Same As The Tenths Digit.
*. The Hundreths Digit Is Half The Tenths Digit.

Find Another Possible Length To Fit These Clues.

00.00 Can Anyine Fill In The Blanks Please!!! ??.??

Originally Posted by SARAHL

A Homework Question That We Are Struggling With - Any Answers??
1. Use The Clues To Find The Length Of Each Throw. Each Throw Is A Four Digit Number Of Metres.
Part One
*. The Tens Digit Is The Same As The Hundreths Digit.
*. The Units Digit Is The Same As The Tenths Digit.
*. The Units Digit Is Four Less Than The Tens Digit.
*. The Sum Of The Digits Is 20.
....

Let the number be: ab.cd with and

From the wording of the problem you know:



Solve this system of simultaneous equations.

I've got the number 73.37

Originally Posted by SARAHL

A Homework Question That We Are Struggling With - Any Answers??
1. Use The Clues To Find The Length Of Each Throw. Each Throw Is A Four Digit Number Of Metres.
Part One
*. The Tens Digit Is The Same As The Hundreths Digit.
*. The Units Digit Is The Same As The Tenths Digit.
*. The Units Digit Is Four Less Than The Tens Digit.
*. The Sum Of The Digits Is 20.
Part Two
*. The Tens Digit Is Twice The Units Digit.
*. The Units Digit Is The Same As The Tenths Digit.
*. The Hundreths Digit Is Half The Tenths Digit.

Find Another Possible Length To Fit These Clues.

00.00 Can Anyine Fill In The Blanks Please!!! ??.??

I did this by algebra.

1.)






So, the throw is .

2.)

Originally Posted by SARAHL

A Homework Question That We Are Struggling With - Any Answers??
1. Use The Clues To Find The Length Of Each Throw. Each Throw Is A Four Digit Number Of Metres.
Part One
*. The Tens Digit Is The Same As The Hundreths Digit.
*. The Units Digit Is The Same As The Tenths Digit.
*. The Units Digit Is Four Less Than The Tens Digit.
*. The Sum Of The Digits Is 20.

ok, so we are looking for a number of the form where

what clues do we have?

well, the we are told, so that is one equation to work with.

we are also told that the sum of the digits is 20, so is another equation we have to work with.

solve this system simultaneously.


try following the clues similarly for the second one



EDIT: wow, i was really late with this

thank you for your help - I feel very stupid not being able to work it out!!! Thanks again!!