Question: i cant understand this question Bahagian B Section B [45 markah / marks] Jawab semua soalan dalam bahagian ini. Answer all questions in this section.

i cant understand this question

i cant understand this question Bahagian B Section B [45 markah /

Bahagian B Section B [45 markah / marks] Jawab semua soalan dalam bahagian ini. Answer all questions in this section. Sebuah tadika membeli x buah meja dan y buah kerusi daripada suatu kedai perabot. Harga sebuah meja dan sebuah kerusi adalah masing-masing RM60 dan RM15. Pembelian perabot itu adalah berdasarkan tiga kekangan berikut. A kindergarten buys x tables and y chairs from a furniture shop. The price of a table and a chair are RM60 and RM15 respectively. The purchase of the furniture is based on three constraints as follows. I: Bilangan perabot adalah selebin-lebihnya 75. The total number of furniture is at most 75. II: Jumlah peruntukan adalah sekurang-kurangnya RM600. The total allocation is at least RM600. III: Nisbah bilangan kerusi kepada bilangan meja tidak kurang daripada 1 : 2. The ratio of number of chairs to the number of tables is not less than 1 : 2. (a) Tulis tiga ketaksamaan, selain daripada x = 0 dan y > 0 yang memenuhi semua kekangan di atas. Write three inequalities, other than x 2 0 and y 2 0, which satisfy the above constraints. [3 markah / marks] (b) Dengan menggunakan skala 2 cm kepada 10 unit pada kedua-dua paksi, bina dan lorek rantau R yang memenuhi semua kekangan di atas. By using a scale of 2 cm to 10 units on both axes, construct and shade the region R which satisfies all the above constraints. [3 markah / marks] (c) Dengan menggunakan graf yang dibina di 11(b), cari bilangan minimum dan maksimum bagi kerusi yang dibeli jika 30 buah meja dibeli. By using the graph constructed in 11(b), find the minimum number and maximum number of chairs bought if 30 tables are bought. [3 markah / marks] Jawapan / Answer: (a) (b) (c)

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