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Khong Pek Mao
This is a Branching question.
Housework = 50% = 5 h
Remaining time = 100% – 50% = 50% = 5 h
Baking cake = 20% of Remaining time = 20/100 x 5 h = 1 h#
Assume Mrs Pang had 10u hour at home.
She spent 50% = 5u hour doing housework.
Time remaining -> 10u – 5u = 5u
20% of 5u was spent baking -> 20% x 5u = 1u
We were told she spent 5 hour doing housework.
5u = 5 hour
1u = 1 hour
She spent 1 hour baking.