Primary 6 Problem Sums/Word Problems - Try FREE

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Question 1 of 4

An album had some Indian, Japanese and Korean stamps.

For every 3 Indian stamps, there were 4 Japanese stamps.

Also, the ratio of the number of Japanese stamps to Korean stamps is 3:4.

After 1281 Indians stamps were added to the album , the number of Indian stamps became `5/7` of the total number of stamps in the album.

(a) What is the ratio of the number of Indian to Japanese to Korean stamps in the album at first?

(b) Find the total number of Japanese and Korean stamps in the album.


Notes to students:

  1. If the question above has parts, (e.g. (a) and (b)), given that the answer for part (a) is 10 and the answer for part (b) is 12, give your answer as:10,12
  2. If your answer is a ratio, leave it as a:b



The correct answer is : 9:12:16,588
(a)____, (b)_____