(a) Country Y's Population data
| year | No. of Death in Million | No. of Death in million | No. of 1mm. in million | No. of Emm. in million | Total population in million |
| 1970 | - | - | - | - | 60 |
| 1971 - 75 | 25 | 3 | 8 | 4 | 86 |
OR
| year | 1970 | 1971 - 75 |
| Number of births in millions | - | 25 |
| Number of deaths in millions | - | 3 |
| Number of immigrants in millions | - | 8 |
| Number of emigrants in millions | - | 4 |
| Total population in million | 60 | 86 |
(b)(i) Net Migration = immigrants — Emigrants
8 million — 4 million = 4 million
(ii) Total population in 1975 = 1970
population + Net Migrations + (number of births — number of deaths)
60 million + 4 million + (25 million — 3 million)
or 64 million + 22 million. = 86 million.
(c) Percentage increase
New population — old population x 100 Old population
86 million - 60 million x 100 60 million
26 x 100 = 43.33%
60
\(\frac{1200 x 100} {15,000 * 1}\) = 8% for B
