A book shop had 880 novels. There were Malay, Chinese and English novels in the ratio of 3 : 8 : 5. When the book shop assistant brought in another 286 new novels, the number of Malay novels was increased by 40% and the number of Chinese novels was increased by ¹₄.

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

	Malay	Chinese	English	Total
Before	3 u	8 u	5 u	880
Change	+ 1.2 u	+ 2 u	+ ?	+ 286
After	4.2 u	10 u	7 u	1166

Increase in the number of Malay novels
= 40% x 3 u
= ⁴⁰₁₀₀ x 3 u
= 1.2 u

Increase in the number of Chinese novels
= ¹₄ x 8 u
= 2 u

Total number of novels at first
= 3 u + 8 u + 5 u
= 16 u

16 u = 880

1 u = 880 ÷ 16 = 55

Increase in the number of Malay and Chinese novels
= 1.2 u + 2 u
= 3.2 u
= 3.2 x 55
= 176

Number of English novels brought in
= 286 - 176
= 110 

(b)
Number of English novels at first
= 5 u
= 5 x 55
= 275

Percentage increase in English novels
= ¹¹⁰₂₇₅ x 100%
= 40%

Answer(s): (a) 110; (b) 40%