Question

Find a number which when increased by 10% becomes 77

Answer 1

x+10/100×x=77
110x/100=77
x=70

Answer 2

Here is the answer,
$x + 10\%ofx = 77 \\ x + 10 \div 100 \times x = 77 \\ x + 1 \div 10 \times x = 77 \\ x + 1 \times x = 77 \times 10 \\ x + 1 \times x = 770 \\ x \times x = 770 - 1 \\ x {}^{2} = 769 \\ x = \sqrt{769} \\ x = 27.73$
Plz mark my answer as the brainliest if you like it...