book Maths Puzzle Numerical Ability

divide
9 5
50 P q
_____________________________
2
10 pq

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book Other Question

3X+12y > 4

my work
12 y > -3X+ 4
divide it all by 12

y > -1/4X + 1/3
.....^
..../a
.../....
../......
./........
/b____cd____>

ignore the dots, they are filler to line everything up.
a) 5x-20
b) 2x+8
c) blank
d) 6x+