Question

Mark (✓) against the correct answer
By what number should $1\frac{3}{4}$ be divided to get $2\frac{1}{2}$?
(a) $\frac{3}{7}$
(b) $1\frac{2}{5}$
(c) $\frac{7}{10}$
(d) $1\frac{3}{7}$

Answer 1

(c) $\frac{7}{10}$

Required number = $1\frac{3}{4}÷2\frac{1}{2}$

= $\frac{7}{4}÷\frac{5}{2}$

= $\frac{7}{4}\times \frac{2}{5}$ [∵ Reciprocal of $\frac{5}{2}$ = $\frac{2}{5}$]

= $\frac{7\times 1}{2\times 5}=\frac{7}{10}$