Fraction of remaining question types like this requires students to use "Part/Whole Models" to represent the numerators and denominators represented in each of the fractions.
There is usually a value (of what's left) that is given at the end for students to use it to find the total at first. But this question instead changes what is left by adding a new value to the "left" and compares it with the original total value at the end.
Such questions usually appear in Paper 2 of P5 and P6 exams.
Calculator usage is allowed.
Timmy made some lemonade for his school's open house event.
3/8 of the lemonade were given out in the morning and 2/5 of the remaining lemonade were given out in the afternoon.
He made another 33 litres of lemonade in the evening and had 8 more litres of lemonade than what he had at first.
He made another 33 litres of lemonade in the evening and had 8 more litres of lemonade than what he had at first.
How much lemonade did Timmy make at first?