Question

please help me
Only 19 and 20 ​

Answer 1

Answer:

19. We are given that two numbers are in the ratio 15:11

Lets start with assuming that then the two numbers are 15x & 11x

Also H.C.F is given as 13.i.e X

15 x = 15 * 13 = 195

11 x = 11 *13 = 143

So the two numbers are 195 & 143.

20.Let x=0.3636....

⇒100x=36.363636....

⇒99x=100x-x

=36.363636....-0.363636

=36

⇒x=36/99=4/11.

So 0.363636....written in the form p/q is 4/11.

Sum of p and q=4+11=15

Ans:15