Question

2.Find the value p :
3/4=21/p

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Answer 1

Answer:

p = 28

Step-by-step explanation:

$\frac{3}{4} = \frac{21}{p} \\ so \: using \: cross \: multiplication \\ 3p = 21 \times 4 \\ p = \frac{21 \times 4}{3} = 28 \\ p = 28$