Question

anderly chooses three different whole numbers. The largest number is 3 times the smallest number. The middle number is 3 less than the largest number. The sum of the number is three numbers is greater than 30 and smaller than 35. Write an expression for the sum of the three numbers

Answer 1

The numbers are x,y,z. The 3rd condition is a bit murky, but it appears that we have

z = 3x
y = z-3
30 < x+y+z < 35

30 < x + (3x-3) + 3x < 35
30 < 7x-3 < 35
33 < 7x < 38
4.7 < x < 5.4
so, x=5

The numbers are 5,12,15 with sum=32