Assume that one square kilometer of field produces 300 tonnes/kmē (1 ton =1000kg) of grain every year. The grain grown in that field contains 141900kJ of energy. Assume that an average person needs 2400kJ every day of energy to survive.
I am not sure how I would go about calculating when it says:
Calculate the number of people a 1kmē field could support for one year if people ate only grain. The options are as follows:
b) 4.86 x 10^4
c) 1.77 x 10^7
Thanks for the help! I really appreciate it