Question

A cook used 2 3/4kg of vegetables in all for a dish . He used 1 1/5kg of potatoes , 3/9kg of onions , 1/5 kg of tomatoes and some beans . How much beans did he use?

Answer 1

Step-by-step explanation:

3 1/20 kgs of beans is used

Answer 2

Answer:

$weight \: of \: total \: vegetables = 2 \frac{3}{4} kg \\ weight \: of \: potatoes = 1 \frac{1}{5} kg \\ weight \: of \: onions = \frac{3}{9} kg \\ weight \: of \: tomatoes = \frac{1}{5} kg \\ weight \: of \: beans = 2 \frac{3}{4} - (1 \frac{1}{5} + \frac{3}{9} + \frac{1}{5} ) \\ = \frac{11}{4} - ( \frac{6}{5} + \frac{3}{9} + \frac{1}{5} ) \\ lcm \: of \: 5 \: and \: 9 \: and \: 5 = 45 \\ so \\ = \frac{11}{4} - ( \frac{54 + 15 + 9}{45} ) \\ = \frac{11}{4} - \frac{78}{45} \\ lcm \: of \: 4 \: and \: 45 =18 0 \\ = \frac{495 - 312}{180} = \frac{183}{180} = 1 \frac{3}{180} kg$