3. Two numbers are respectively 20% and 40% more than a third number. What is the ratio of two numbers?
Answers
Answered by
1
Step-by-step explanation:
Let the numbers be x, y and z.
x = 20 % × z + z
= (20z+100z)/100 = 120z/100
= 12z/10
y = 40 % × z + z
= (40z+100z)/100 = 140z/100
= 14z/10
x : y = 12z/10:14z/10
= (12z×10)/10:(14z×10)/10
= 12z:14z = 12:14 = 6:7
The the ratio of x and y is 6 : 7
Similar questions