ExamPlay Light Logo
登入

Mathematics for IGCSE & O level - Proportion (Section 2 - No. 7)

If *a* varies inversely as *b*, and *a* = 5 when *b* = 4, what is the value of *b* when *a* = 2?
2.5
10
16
20

解释

a=k/b. 5=k/4; k=20; a = 20/b; 2 = 20/b; b=10

评论 (0)

广告