Can u help with CS task? Is this correct?

Question

is problem solving correct?
how to solve this problem correct?
(answer is 35)

s = 0, n = 75;
while s + n < 150
s = s + 15;
n = n - 5;
n = ?

1) 15-5=10
2) 75/10=7
3) 7*5=35
n = 35

Answer 1

Loop1: s = 0, n = 75, s+n = 75
Loop2: s = 15, n = 70, s+n = 85
Loop3: s = 30, n = 65, s+n = 95

So according to this logic, the loop should terminate when s+n = 155, which occurs on the 9th iteration, n would have been deducted by 5 for 8 times, which is a total of 5*8 = 40.

The result of n would be 75-40 = 35.

The rest of the iteration:

Loop4: s = 45, n = 60, s+n = 105
Loop5: s = 60, n = 55, s+n = 115
Loop6: s = 75, n = 50, s+n = 125
Loop7: s = 90, n = 45, s+n = 135
Loop8: s = 105, n = 40, s+n = 145
Loop9: s = 120, n = 35, s+n = 155

Answer 2

interesting question