Level 3
The total capacity of a bottle and a mug is 8 ℓ. The total capacity of 3 such bottles and 5 such mugs is 31 ℓ. What is the capacity of each mug? Express your answer in ℓ
Level 3
There were 37 pupils in a class. 13 of the boys and 14 of the girls did not wear spectacles. Given that 26 pupils who wore spectacles, how many girls were there in the class?
Level 3
In a shopping mall, 58 of the customers were female. There were 56 more female customers. Within five minutes, some female customers left the shopping mall. As a result, there were 711 as many male customers as female customers. How many female customers left the shopping mall during the five minutes?
Level 3
There were 258 pears and apples in a fruit stall. 25 of the pears and 37 of apples were sold. Given that there were 151 pears and apples left, how many pears were there in the fruit stall at first?
Level 3
Sally and Tricia had $65 at first. Sally spent 58 of her money and Tricia spent 23 of her money. Given that they had $24 left, how many much did Sally have at first?
