Question

The sum of 2440 consists of two numbers 100 and 10. If 100 is six times that of 10. How many 100 are there?

Answer 1

Let the amount of number 10 is $x$, then amount of number 100 is $6x.$ We get

$$2440=x*10+6x*100\\ 2440=610x\\ x=4$$

Answer: the number 100 is 6*4=24 times.