Need help in problem 13,14 and 16.. Need urgent help. do it carefully.

1-13 Ton of oil equivalent (toe) is an amount of energy unit commonly used to express large amounts of energy. It represents the amount of energy released by burning 1 ton (1000 kg) of crude oil. One toe is taken equal to 41.868 GJ, sometimes rounded to 42 GJ. Total world delivered energy consumption in 2010 by fuel was 523.9 Quad while that by end-use sector was 382.0 Quad. Express these values in toe units. 1-14 The overall thermal efficiency of coal-burning steam power plants in the world can be taken to be 30 percent. Using the data in Table 1-1, determine the amount of electricity produced by coal- burning power plants, in GWh. 1-15 In 2013, 21.7 percent of global electricity is generated from natural gas-burning power plants. Total electricity generation in that year was 23,332 terawatt-hours (TWh) and it is estimated that 45 Quad natural gas is consumed to generate electricity. Determine the overall thermal efficiency of natural gas-burning power plants in 2013. 1-16 According to a 2007 report, 19,028 TWh electricity is produced in the world in 2006, and 55.3 percent of this production took place in OECD countries. The report also indicates that the average efficiency of thermal power plants in OECD countries in 2006 was 38 percent. Determine the amount of energy consumed in OECD countries in TWh, Quad, and toe