Question

If $p \: = \: 3.42 \: \times \: {10}^{5} \: \ and \: \: q \: = \: 12.3 \: \times \: {10}^{ - 2}$, find the value of 3p *2q

Answer 1

Answer:

$p = 3.42 \times {10}^{5} \\ q = 12.3 \times {10}^{ - 2}$

$3p \times 2q = 3(3.42 \times {10}^{5} ) \times 2(12.3 \times {10}^{ - 2} ) \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 252396$

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Answer 2

Answer:

$p = 3.4 2\times {15}^{5} \\ q = 12.3 \times {10}^{ - 2}$

$3p \times 2q = 3 \times 3.42 \times {10}^{5} \times 2 \times 12.3 \times {10}^{ - 2} \\ \\ = \frac{6 \times 342 \times 123 \times {10}^{5} }{ {10}^{3} \times {10}^{2} } \\ \\ = 6 \times 342 \times 123 \\ = 252396$

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