Mr Hunchback’s Problem,by Sachin

Unfortunately, all the animals have escaped the zoo! Poor Mr Hunchback is left in an ocean of blames. There were 48 giraffes, 89 zebras and 1 orangutan. If you can find the total of these, Mr Hunchback can prove to Sherlock he’s innocent! Eek! Mr Hunchback didn’t learn maths in school. Can you help him?

Answer:
138!!
Thanks for helping!