An octopus weighted 5/6 kilogram. After two weeks, it's weight has increased by 3/10 kilogram. But afterwards, it lost 1/5 kilogram in weight as it was sick. What is it's current weight?

Answer

14/15 kg

Step-by-step explanation:

Rewriting our equation with parts separated

=1+215-15

Solving the fraction parts

2/15-15=?

Find the LCD of 2/15 and 1/5 and rewrite to solve with the equivalent fractions.

LCD = 15

2/15-3/15=-1/15

Combining the whole and fraction parts

1-1/15=14/15

Solution by Formulas

converting mixed numbers to fractions, our initial equation becomes,

17/15-15

Applying the fractions formula for subtraction,

= (17*5) - (1*15) 15*5

=85-15/75

=70/75

Simplifying 70/75, the answer is

=14/15