Question

3.2% of 500 × 2. 4% of ? = 312

Answer 1

3.2%×500×2.4%×x=312
32/1000×500×24/1000× x=312
16×24× x=312000
x=312000/16×24
x=312000/384
x=812.5

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Verify
32/1000×500×24/1000×812.5=312

16×19500/1000=312
16×19.5=312
312=312

Answer 2

3.2 % × 500
=3.2/100 × 500
=16

Now,
16 × 2.4/100 × x = 312

☆ x = 812.5