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Question

hi, can anyone help us figure out why the answer sheet states option (1) 12% as the answer?

Answer

On food = 2/5, remainder = 3U

On food = 20/50, remainder = 30U

4/5 x  30 = 24U

30 – 24 = 6U

6/50 x 100 = 12%

 

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thank u! however why is there a need for 30-24? coz the fraction spent on transport is 1/5 of salary remainder. so your last equation 6/50×100% refers to the % spent on transport and not % savings ?

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out of the 30U, 24U is used for transport. 

6U is saved. 

Hence, the percentage saved is 6/50 x 100 = 6 x 2 = 12%

 

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