Pls help in (b).
If I take C as1,2,3 and 4 then pamela’s age is 17years,21, 25 & 29 respectively &their total age 45,55,65,75respectively. Could you please explain why I should take C as4 because the correct answer given is 75.
Technically, what you said is correct. their total age could be 4 different numbers, based on whatever c is. I would say that this question is poorly phrased, it should be “what could their oldest total age be?”
In this case, I would still have put 75, because the closest number to the limit (4c <17) would be 4c = 16.