Question

I just need number 8 to be answered please!

Table 1. Agricultural water requirements Food Water Requirement (L/kg) | Calorie Density (cal/kg). Beef 15,500 2,170 Rice 3,400 1.304 Potato 250 765 7. Calculate the water requirement for an 800 cal meal of beef. Average water requirements and calorie density are shown in table 1. (answer in L; round to nearest L) 8. Calculate the water requirement for a rice and potato meal. Use 400 cal of rice and 400 cal of potatoes. Average water requirements and calorie density are shown in table 1. (answer in L; round to nearest L)

Answer 1

400 Call of rice. Calorie density of vice : 1304 Call/kg - 1304 Calorie produced 400 Calorie produced Ikg of vile ?? mass of rice required to produce 400 Celovie = (400 x 1kg 1304 30. 306 kg water requirement of rice = 3400 L/kg - 3400 Lot weer I kg of vice required 0.306 kg of rice = 2? water resuired =10.306) 14 x 34004 . 1040.4 L 400 Cal of potatoes Calorie density of 765 Cal 400 Col potato = 765 Calks -> I ks ct potato Needed, + ?? - 400 X mass of potatoes required 765 = 0.522 kg

water requirement of potato = 250L /kg I kg of potato - 250L of water o required, 0.522 kg of potato → ??. water resuired = 0.522 4sx 250L . . = 130.5 L and ... water required for 400 cal of rice 400 cal of Potatoes. = 1040.4 L + 130.52 sepertie : (1040.4 +130.5) L = 1170.94