exam2019 wrote:
Might it be that for an 11+ question they don't expect the algebraic solution? Instead the equation could be solved iteratively by assuming values for x and adjusting until the answer reaches 13.5?
It did say in the question to try different values for speed but it seems like trial and error would take quite a while for an 11yo who probably would struggle to understand it anyway.
Guest55 wrote:
It's a poor question as you need to assume so much ie you can use the boat adjacent to the bank, river is straight, ...
I agree, it was on the entrance exam for a very popular school but it is a very old paper