Level 3
There was an equal number of red and silver marbles in a bag at first. After 16 silver marbles were taken out and 41 red marbles were added into the bag, there was 14 as many silver marbles as red marbles. Find the number of silver marbles in the bag at first.
Level 3
There was an equal number of boys and girls at an exhibition. After 35 of the boys and 42 girls had left the exhibition, there were 12 more boys than girls at the exhibition. How many students were there at the exhibition at first?
Mrs Tay had an equal number of pears and apples at first. She sold half of the apples and bought another 42 pears. In the end, she had thrice as many pears as apples. Find the number of apples she had at first.
Level 3
Jake and Dave had $1200 at first. Jake spent $400 while Dave spent $120 less than him. The amount Dave had left was 35 of the amount Jake had left. How much did Jake have at first?
Level 3
At a farm, there were 47 as many ducks and chickens. The farmer added another 24 ducks but sold away 40 chickens. In the end, there were 8 chickens more than ducks. How many ducks and chickens were there altogether in the end?
