Question

1 upon 15 + 1 upon 20 + 1 upon 10

Answer 1

Answer:

1 / 15 = 4 / 60

1 / 20 = 3 / 60

1 / 10 = 6 / 60

now adding numerator and taking same denominator

=13 / 60

Answer 2

Answer:

13/60

LCM of denominators is 60

so term becomes

( 4+3+6)/60= 13/60. Answer