Question

Twice a number (x) is less than 10

Answer 1

Let

x-------> the number

we know that

Twice a number (x) is less than $10$

so

$2x < 10\\\\ x < \frac{10}{2} \\\\x < 5$

the solution is the interval ------> (-∞,5)

therefore

the answer is

$x < 5$

Answer 2

2X<10, 2 times a number is less than 10