Question

In a ratio of four numbers, the first number is 20% less than the second number, the third number is 12% more than the second number and the fourth number is two times more than the second number. What is the ratio of the first, third and fourth number?

Answer 1

Answer:

20:25:28:75

Step-by-step explanation:

if 2nd no.=100

1st no= 80

3rd= 112

4th= 2*100+100= 300

now,

80:100:112:300

40:50:56:150

20:25:28:75

Answer 2

Answer:

Step-by-step explanation:

given 4th number  =405

let the 3rd no be x1,2nd no be x2 and 1st no be x3

4th number is 50% more than than which mean 3rd no. is 50 % less than 4th no.=405*100/150*x1

⇒ 3rd number   =270

3rd no. is 10% less than 2nd =270*100/90*x2

⇒ 2nd number  =300

and 2nd no. is 20% more than 1st =300*100/120*x3

∴ 1st number = 250

hence the ratio of 1st :2nd:3rd:4th is 250:300:270:405