A shop had 1190 magazines. There were Chinese, English and Malay magazines in the ratio of 4 : 8 : 5. When the shop assistant brought in another 588 new magazines, the number of Chinese magazines was increased by 60% and the number of English magazines was increased by ¹₂.

1. What was the number of Malay magazines that the shop assistant brought in?
2. What was the percentage increase in the number of Malay magazines?

	Chinese	English	Malay	Total
Before	4 u	8 u	5 u	1190
Change	+ 2.4 u	+ 4 u	+ ?	+ 588
After	6.4 u	12 u	7 u	1778

Increase in the number of Chinese magazines
= 60% x 4 u
= ⁶⁰₁₀₀ x 4 u
= 2.4 u

Increase in the number of English magazines
= ¹₂ x 8 u
= 4 u

Total number of magazines at first
= 4 u + 8 u + 5 u
= 17 u

17 u = 1190

1 u = 1190 ÷ 17 = 70

Increase in the number of Chinese and English magazines
= 2.4 u + 4 u
= 6.4 u
= 6.4 x 70
= 448

Number of Malay magazines brought in
= 588 - 448
= 140 

(b)
Number of Malay magazines at first
= 5 u
= 5 x 70
= 350

Percentage increase in Malay magazines
= ¹⁴⁰₃₅₀ x 100%
= 40%

Answer(s): (a) 140; (b) 40%