Question

Ramesh painted a table in2 1/4hr and a chair in1 7/10hr How much time did he take in all

Answer 1

Step-by-step explanation:

$total \: time \: taken \\ = 2 \frac{1}{4} + 1 \frac{7}{10} \\ = \frac{2 \times 4 + 1}{4} + \frac{1 \times 10 + 7}{10} \\ = \frac{8 + 1}{4} + \frac{10 + 7}{10} \\ = \frac{9}{4} + \frac{17}{10} \\ = \frac{9 \times 5}{4 \times 5} + \frac{17 \times 2}{10 \times 2} \\ = \frac{45}{20} + \frac{34}{20} \\ = \frac{45 + 34}{20} \\ = \frac{79}{20} \\ = 3 \frac{19}{20} \: hrs$