Question

va rog la următoarele exerciții

Answer 1

$1. \frac{20}{100} \times 75 = 15 \\ 2. \frac{12}{100} \times 50 = 6 \\ 3. \frac{35}{100} \times 60 = 21$
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$4. \frac{70}{100} \times x = 51 \\ \frac{70x}{100} = 51 \\ \frac{7x}{10} = 51 \\ 7x = 510 \\ x = \frac{510}{7} = 72.8$