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ADTOCL90IN
Answered

r varies jointly as p and q and r = 30 when p = 5 and q = 3, find r when p = 8 and q = 7.

Sagot :

HOLOCUPCAKEIN

Answer:

r

k = -----

pq

30

= ------

5(3)

30

= -----

15

k = 2

r = kpq

= 2(8)(7)

=16(7)

r = 112

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