Question

The sum of three numbers is 90 the second number is10 less than the first the third number is 2 times the first what are the numbers

Answer 1

Answer:

25, 15 and 50.

Step-by-step explanation:

Let the first number be a.

According to the given situation :

Second number is 10 less than the first. It means : Second number = first number - 10 = > Second number = a - 10

Third number is 2 times the first number. It means : Third number = 2 x first number = > third number = 2a

Here,

= > Sum of all numbers = 90

= > First number + second number + third number = 90

From the equations formed above :

= > a + a - 10 + 2a = 90

= > 4a = 90 + 10

= > 4a = 100

= > a = 100 / 4

= > a = 25

Required numbers are :

• first number = a = 25
• second number = a - 10 = 25 - 10 = 15
• third number = 2a = 2( 25 ) = 50

Answer 2

Given :-

Sum of three numbers = 90

Equations and relations about Three numbers.

To Find:-

Three Numbers which form it 90,by addition.

Answer:-

25,15,50

Step By Step Explaination :-

Let the first number be 'x'

So,by above data in question,we can find other numbers.

then, 2nd number is 10 less then,

=> x-10 , since we know x is first number.

So, The third number comes to be twice of first number.

Its, 2x.

So all three numbers are as follows,

→ x,x-10,2x

Now, there sum is 90, so we can add them.

→ x+(x-10)+2x=90

→4x-10=90

→4x=90+10

→4x=100

→x=100/4

→x=25

So, First number is 25,

second according to the question is x-10→25-10=15.

Third is Twice=2x=> 2x25=> 50.

So,all three numbers are, 25,15,50 respectively.

Ans.