Can you solve this mind-bending maths problem given to Singapore schoolchildren?

A maths problem given to Singapore’s schoolchildren has gone viral globally, after a TV personality posted it to his Facebook page and left grown-ups tearing their hair out.

Can you solve this mind-bending maths problem given to Singapore schoolchildren?
Mon, 13 Apr, 2015 - 01:00
Dave Molloy

Kenneth Kong, a presenter from Singapore TV, posed the question claiming it was for children aged around 10.

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