book Maths Puzzle Numerical Ability

9x+54y+32x+92y

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book Other Question

s/6<1 Please help me solve this problem:

1 sqrt of 27 minus 4 sqrts of 25 plus 6 sqrts of 75.

I got 33 sqrts of 3 minus 20, but my teacher got 8 sqrts of 3 minus 20

thanks, bev