Answer:
i) amount of MSW generated:
Laguna: 19200 Kg/day
Makati: 38000 Kg/day
ii) number of trucks to collect twice weekly:
Laguna: 3 trucks
Makati: 5 trucks
iii) volume of MSW in tons that enter landfill/week:
Laguna: 147.84 ton/week
Makati: 292 ton/week
Explanation:
i) Laguna: 0.96 Kg person / day of MSW * 20000 = 19200 Kg MSW / day
⇒ Laguna: 19200 Kg/day * ( 7day/ week ) = 134400 Kg/week
Makati: 1.9 Kg person / day of MSW * 20000 = 38000 Kg MSW / day
⇒ Makati: 38000 Kg/day * ( 7day/week ) = 266000 Kg/week
ii) truck capacity = 4.4 ton * ( Kg / 0.0011 ton ) = 4000 Kg
⇒ quote/day = 4000 Kg * 0.75 = 3000 Kg
⇒ loads/day = 2 * 3000 kg = 6000 Kg
⇒ operate/week = 5 * 6000 Kg = 30000 Kg
∴ Laguna: number of trucks needed/week= 134400 / 30000 = 4.48 ≅ 5 trucks
⇒ number of trucks to collect twice weekly = 5 / 2 = 2.5 ≅ 3 trucks
∴ Makati : number of trucks needed/week = 266000 / 30000 = 8.86 ≅ 9 trucks
⇒ number of trucks to collect twice weekly = 9 / 2 = 4.5 ≅ 5 trucks
iii) enter landfill/week:
Laguna: 134400Kg MSW/week * ( 0.0011 ton/Kg ) = 147.84 ton/week
Makati: 266000Kg MSW/week * ( 0.0011 ton/Kg ) = 292 ton/week
