12 9 6 3
60 45 30 15

what is the constant of proportionality

5

Step-by-step explanation:

A constant of proportionality is the ratio that forms between each x y pair as the fraction y/x. In a proportional relationship it is constant or the same every time.

60/12 = 5

45/9 = 5

30/6 = 5

15/3 = 5

The constant of proportionality is 5.

62.5 paisa

step-by-step explanation:

4000*70 = 280000

280000-(2000*90) = 100000

4000-2400 = 1600

100000/1600 = 62.5

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