A book store had 1365 magazines. There were Malay, Chinese and English magazines in the ratio of 7 : 8 : 6. When the book store assistant brought in another 676 new magazines, the number of Malay magazines was increased by 20% and the number of Chinese magazines was increased by ³₄.

1. What was the number of English magazines that the book store assistant brought in?
2. What was the percentage increase in the number of English magazines?

	Malay	Chinese	English	Total
Before	7 u	8 u	6 u	1365
Change	+ 1.4 u	+ 6 u	+ ?	+ 676
After	8.4 u	14 u	9 u	2041

Increase in the number of Malay magazines
= 20% x 7 u
= ²⁰₁₀₀ x 7 u
= 1.4 u

Increase in the number of Chinese magazines
= ³₄ x 8 u
= 6 u

Total number of magazines at first
= 7 u + 8 u + 6 u
= 21 u

21 u = 1365

1 u = 1365 ÷ 21 = 65

Increase in the number of Malay and Chinese magazines
= 1.4 u + 6 u
= 7.4 u
= 7.4 x 65
= 481

Number of English magazines brought in
= 676 - 481
= 195 

(b)
Number of English magazines at first
= 6 u
= 6 x 65
= 390

Percentage increase in English magazines
= ¹⁹⁵₃₉₀ x 100%
= 50%

Answer(s): (a) 195; (b) 50%