Level 3
The average mass of a group of girls was 37 kg. When Jamie, a girl, joined the group, the average mass of the group became 34 kg. If Jamie had a mass of 22 kg, how many girls were there in the group in the end?
Level 3
Madam Lee bought a sack of rice on Monday and cooked 112 kg of rice everyday. By Sunday, she was 12 kg short of rice. On which day did she cook 35 of the rice in the sack?
Level 3
The table shows the mass of fruits sold by a grocer in a day. If the grocer sold four times as much lemon as banana, how many kilograms of lemon were sold?
Level 3
The table shows the mass of fruits sold by a grocer in a day. If the grocer sold four times as much lemon as banana, how many kilograms of lemon were sold?