book Maths Puzzle Numerical Ability

Solve for t and find the digit that equals a: [3(230+t)]^2=492,a04

Read Solution (Total 0)

book Other Question

Sorry LongJohn - it's embarrassing that I made a dumb typo in the original post, hopefully this is clearer.

I couldn't see a way to 'edit' the original post, so I've reposted. 1/x-4=1/2x+7