JAMB - Mathematics (2003 - No. 4)
Find (\(\frac{1}{0.06} \div \frac{1}{0.042}\))\(^{-1}\)
1.43
1.53
3.14
4.42
解释
\((\frac{1}{0.06} \div \frac{1}{0.042})^{-1}\)
= \((\frac{100}{6} \div \frac{1000}{42})^{-1}\)
= \((\frac{100}{6} \times \frac{42}{1000})^{-1}\)
= \((\frac{7}{10})^{-1}\)
= \(\frac{10}{7}\)
= 1.4285 \(\approxeq\) 1.43.