Can Chef

Problem
Chef owns a car that can run 15 kilometers using 
1 liter of petrol.
He wants to attend a programming camp at DAIICT.
X liters of petrol is present in Chef's car. The distance between his house and DAIICT is Y kilometers.
Determine whether Chef can attend the event and return to his home with the given amount of petrol.
Note: Chef has to return back to home, so the total distance to be covered would be 2⋅Y.
Explanation:
Test case 1: Chef needs to cover a distance of 100 kilometers in total. He can cover it with 10 liters of petrol.
Test case 2: Chef needs to cover a distance of 400 kilometers in total but using 15 liters of petrol, he can cover only 225 kilometers.
Test case 3: Chef needs to cover a distance of 40 kilometers in total. He can cover it with 3 liters of petrol.

/* package codechef; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Codechef
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Scanner sc=new Scanner(System.in);
		int t=sc.nextInt();
		for(int i=0;i<t;i++){
		    int x=sc.nextInt();         //petrol
		    int y=sc.nextInt();         //distance(1l=15km)
		    int a=x*15;
		    int b=y*2;
		    if(a>=b){
		        System.out.println("yes");
		    }else{
		        System.out.println("No");
		    }
		}// your code goes here
	}
}