need solution

(b)/Austrialia has a land area of 2941526 square miles. In mid-19614 it had a population of 10508186 persons which increased to 11550462 persons by the middle of 1966. About 22.65 percent of the 1961-1966 increases were due to net migration. Between 1 January and 31 December 1966, a totalof 222626 babies were born, of whom 50.98 percent were male babies. Around 6.74 percent of the 1966 population consisted of females in the (a) age range 20 to 29 years who had born 61.58 percent of the babies born during 1966. In the same year 102703 persons died of whom 2394 died due to road accidents. (06) (i) Estimate the crude birth rate in 1966. 1i Estimate the sex-ratio at birth in 1966