Numbers at ratio

The two numbers are in a ratio of 3:2. If we each increase by five would be at a ratio of 4:3. What is the sum of the original numbers?

Correct answer:

s =  25

Step-by-step explanation:

a:b=3:2 (a+5):(b+5)=4:3  2a=3b 3(a+5)=4(b+5)  2 a=3 b 3 (a+5)=4 (b+5)  2a3b=0 3a4b=5  Pivot:Row1Row2 3a4b=5 2a3b=0  Row232 Row1Row2 3a4b=5 0.33b=3.33  b=0.333333333.33333333=10 a=35+4b=35+4 10=15  a=15 b=10  s=a+b=15+10=25



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Showing 1 comment:
Math Student
Q: 7 : 4 = 42 : x

A: x = 42 * 4/ 7 = 24

7:4 = 42:24

Have a fun math!





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