Math, asked by khandelwalshruti545, 7 months ago

a number is 2/5 times another number . if their sum is 70. find the numbers

Answers

Answered by Anonymous
1

First of all, we need to write this question in algebraic language.

We know that 2/5th of some number, say x, is equal to another numbe, say y. We also know that their sum is 70.

Now, we've 2 equations and 2 unkown quantities. The equations are,

2x/5 = y………(1)

and

x+y = 70……..(2)

By putting the value of y from (1), equation (2) will be modified as,

x+(2x/5) = 70.

Take LCM,

7x/5 = 70.

Solve for x and we get x as 50.

Since the sum of the 2 numbers is 70, the other number should be 20.

Ao, the two required numbers are 50 and 20.

Answered by Anonymous
1

Answer:

heya❤️

Step-by-step explanation:

We know that 2/5th of some number, say x, is equal to another numbe, say y. We also know that their sum is 70.

Now, we've 2 equations and 2 unkown quantities. The equations are,

2x/5 = y………(1)

and

x+y = 70……..(2)

By putting the value of y from (1), equation (2) will be modified as,

x+(2x/5) = 70.

Take LCM,

7x/5 = 70.

Solve for x and we get x as 50.

Since the sum of the 2 numbers is 70, the other number should be 20.

Ao, the two required numbers are 50 and 20.

Similar questions