Numbers at ratio 2

Two numbers are in the ratio 3:5. If each number is increased by 10, the ratio becomes 5:7. Find the sum of the numbers.

Correct answer:

s =  40

Step-by-step explanation:

a:b=3:5 (a+10):(b+10)=5:7  5a=3b 7(a+10)=5(b+10)  5 a=3 b 7 (a+10)=5 (b+10)  5a3b=0 7a5b=20  Pivot:Row1Row2 7a5b=20 5a3b=0  Row275 Row1Row2 7a5b=20 0.57b=14.29  b=0.5714285714.28571429=25 a=720+5b=720+5 25=15  a=15 b=25  s=a+b=15+25=40



Did you find an error or inaccuracy? Feel free to write us. Thank you!







Tips for related online calculators
Check out our ratio calculator.
Do you have a linear equation or system of equations and are looking for its solution? Or do you have a quadratic equation?

You need to know the following knowledge to solve this word math problem:

Related math problems and questions: