Question

Multiply 6⁄5 × 25⁄24 .
a. 125⁄144
b. 5⁄4
c. 4⁄5
d. 144⁄125

Answer 1

you have to shorten the cross
$\frac{6}{5} * \frac{25}{24} = \frac{6:6}{5:5} * \frac{25:5}{24:6} = \frac{1}{1} * \frac{5}{4} = 1 \frac{1}{4}$

answer b 5/4
or otherwise
$\frac{6}{5} * \frac{25}{24} = \frac{6*25}{5*24} = \frac{150}{120} = \frac{150:30}{120:30} = \frac{5}{4} = 1 \frac{1}{4} Answer b 5/4$