A student, Mariam, wants to wallpaper a wall measuring 3m by 2.4m. She has 4.7m² of wallpaper. If wallpaper is sold in rolls of 10m² costing shs. 32,000 per roll, how many rolls must she buy and how m

Hey Water, good to see you again. Hapa kuna suluhisho la Item 6: a) i) Step 1: Tafuta eneo la ukuta. Urefu wa ukuta = 300 cm = 3 m Upana wa ukuta = 240 cm = 2.4 m Eneo la ukuta = 3 m × 2.4 m = 7.2 m^2 Step 2: Tafuta kiasi cha ziada cha karatasi ya ukuta kinachohitajika. Karatasi ya ukuta aliyonayo Mariam = 4.7 m^2 Karatasi ya ukuta ya ziada inayohitajika = 7.2 m^2 - 4.7 m^2 = 2.5 m^2 Mariam anahitaji kununua 2.5 m² zaidi ya karatasi ya ukuta. ii) Step 3: Tafuta idadi ya roli za karatasi ya ukuta anazopaswa kununua. Kila roli ina 10 m^2. Kwa kuwa anahitaji 2.5 m^2 na roli zinauzwa nzima, atalazimika kununua roli moja. Idadi ya roli za kununua = 1 roli. Step 4: Tafuta gharama ya karatasi ya ukuta ya ziada. Gharama ya roli moja = shs. 32,000 Gharama ya roli 1 = 1 × 32,000 = shs. 32,000 Mariam atalipa shs. 32,000 kwa karatasi ya ukuta ya ziada. b) i) Step 1: Tafuta mapato yanayotozwa kodi kwa mfanyakazi mmoja. Mshahara ghafi kwa mfanyakazi = shs. 350,000 Posho ya usafiri isiyotozwa kodi = shs. 90,000 Mapato yanayotozwa kodi = 350,000 - 90,000 = shs. 260,000 Step 2: Tafuta kodi ya mapato kwa mfanyakazi mmoja. • Bendi ya kwanza (0 - 100,000): Kiasi = shs. 100,000 Kiwango cha kodi = 0% Kodi = 100,000 × 0\% = shs. 0 • Bendi ya pili (100,001 - 200,000): Kiasi = 200,000 - 100,000 = shs. 100,000 Kiwango cha kodi = 5% Kodi = 100,000 × 0.05 = shs. 5,000 • Bendi ya tatu (200,001 - 300,000): Kiasi = 260,000 - 200,000 = shs. 60,000 Kiwango cha kodi = 15% Kodi = 60,000 × 0.15 = shs. 9,000 Jumla ya kodi ya mapato kwa mfanyakazi mmoja = 0 + 5,000 + 9,000 = shs. 14,000 Step 3: Tafuta jumla ya kodi ya mapato Mariam atakayokata kutoka kwa wafanyakazi wake wote. Idadi ya wafanyakazi = 3 Jumla ya kodi ya mapato = 14,000 × 3 = shs. 42,000 Jumla ya kodi ya mapato Mariam atakayokata ni shs. 42,000. ii) Step 4: Tafuta mshahara halisi (net salary) kwa kila mfanyakazi. Mshahara halisi = Mshahara ghafi - Kodi ya mapato kwa mfanyakazi Mshahara halisi = 350,000 - 14,000 = shs. 336,000 Mariam atamlipa kila mfanyakazi shs. 336,000 kama mshahara halisi. Tuma swali linalofuata 📸