Question

Tina rita and irfan went out for lunch in a restaurant. Tina paid 1/4 amount of the bill and irfan paid 1/3 of the bill. riya paid the remaining bill .what part of the bill was paid by riya
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Answer 1

Answer:

\frac{1}{4}  +  \frac{1}{3}  + x = 1 \\  \frac{3(1) +4(1) }{12}  + x = 1 \\  \frac{3 + 4}{12}  + x = 1 \\  \frac{7}{12}  + x = 1 \\ x = 1 -  \frac{7}{12}  \\ x =  \frac{12 - 7}{12}  \\  x =  \frac{5}{12}

Double step verification :-

=  \frac{1}{4}  = 0.25 \\  = \frac{1}{3}  = 0.3333..... \\  = \frac{5}{12 } = 0.41666....

Add them you get 1 then you are right.

= 0.25 + 0.3333... + 0.41666... \\  = 1

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