Variation - Jamb Mathematics Past Questions and Answers

Question 6:

• JAMB 2017

If temperature t is directly proportional to heat h, and when t = 20oC, h = 50 J, find t when h = 60J

A. 24^oC
B. 20^oC
C. 34^oC
D. 30^oC

Question 7:

• JAMB 2017

If temperature t is directly proportional to heat h, and when t = 20^oC, h = 50 J, find t when h = 60J

A. 24^oC
B. 20^oC
C. 34^oC
D. 30^oC

Question 8:

• JAMB 2014

y varies directly as w². When y = 8, w = 2. Find y when w = 3

A. 18
B. 12
C. 9
D. 6

Question 9:

• JAMB 2014

P varies directly as Q and inversely as R. When Q = 36 and R = 16, P = 27. Find the relation between P, Q and R.

A. \(P = \frac{Q}{12R}\)
B. \(P = \frac{12Q}{R}\)
C. \(P = 12QR\)
D. \(P = \frac{12}{QR}\)

Question 10:

• JAMB 2013

P varies jointly as m and u, and varies inversely as q. Given that p = 4, m = 3 and u = 2 and q = 1, find the value of p when m = 6, u = 4 and q =\(\frac{8}{5}\)

A. 12\(\frac{8}{5}\)
B. 15
C. 10
D. 28\(\frac{8}{5}\)