Question

Find the number which when multiped two-third of it is 78

Answer 1

Answer:

$26 \times 3 = 78 \\ 39 \times 2 = 78$

Answer 2

Step-by-step explanation:

$x \times \frac{2}{3} x = 78 \\ \\ \frac{2}{3} {x}^{2} = 78 \\ \\ {x}^{2} = 78 \times \frac{3}{2} \\ \\ {x}^{2} = 39 \times 3 \\ \\ {x}^{2} = 117 \\ \\ x = \sqrt{117}$