Question

please let me know if you​

Answer 1

Answer:

60cm

Explanation:

ht. of dozen (12 books) = 48cm

ht.of 1 book = 48/12 = 4cm

Now,

By ques,

3 books r added then,

ht. of 3 books = 4*3 = 12cm

∴ Height of total books = 48cm + 12cm

                                       = 60 cm Ans.