WAEC Geography 2023 Papers

Concept:The Earth rotates $360^\circ$ in $24$ hours, so $1^\circ$ of longitude equals $4$ minutes of time difference. Locations further east have later local time.Explanation:Town C is at $15^\circ$E and Town D is at $60^\circ$E.Longitude difference $= 60^\circ - 15^\circ = 45^\circ$.Time difference $= 45^\circ \times 4 = 180$ minutes, which is $3$ hours.Since Town D is further east than Town C, its local time is ahead of Town C's local time.Local time at Town D $= 7:00\text{ a.m.} + 3\text{ hours} = 10:00\text{ a.m.}$Answer:C. 10.00 a.m.