"How many boys in our class?" - asked Yang Nastya. Nastya, having thought a little, answered: "If to take away the number which is written down by two greatest even figures from the greatest two-digit number and to the received number to add the smallest two-digit number, then the number of boys in our class will just turn out". How many was boys in this class?

163
99 - To 88 + 10 = 21 malchikovnaibolsha the two-digit-place number is 99. The greatest two-digit-place number which is written down by two greatest even figures is 88. The smallest two-digit number is <10.span> so it turns out: 99-88=11+10=21 boys
230
Answer add