Multiplication of fractions

Multiplication of fractions

There were 240 trees in a farm.   $\frac{5}{12}$ more are planted this month. How many trees are there now?

 $4\frac{4}{5}\ \times\ 1\frac{7}{8}\times1\frac{2}{3}\ =\ ?$  

A book costs $400 originally. During Christmas sale, the price is reduced by

 $\frac{1}{5}$  . How much does the cost during the sale?