X= 10
complementary angles= 90° so 90-50=40
40 ÷ 4= 10
Answer: 54945
Smallest 5 digit number,which is also a palindrome and divisible by 99 is 54945
800 people because when you try to find the number of people, x, you do cross multiply. So it will be 520/x = 65/100, next you multiply 520 by 100, then divide that by 65 to get 800 people