The number 7490xy is divisible by 90. Find out (x+y).  Choose the correct option:
A) 4
B) 5
C) 6
D) 7
E) 8
10×9=90 where 10 and 9 are co-prime numbers. Hence, if   7490xy is divisible by 9 and 10, it will also be divisible by 90   7490xy is divisible by 10. We know that a number is divisible by 10 if the last digit is 0.   Hence   Thus we have the number   7490x0. If this is divisible by 9,   7+4+9+0+x+0 is divisible by 9   20+x is divisible by 9 (where   x   x is a digit)   x=7   Hence,   (x+y)=(7+0)= 
<gadget id="calculator">(7+0)</gadget>
<output>7</output>
7   Answer : 7
<result>D</result>
The number 7490xy is divisible by 90. Find out (x+y).