There were some people on a train. At the first stop, one third got off. At the second stop, three eighths of the remaining people got off. Finally 15 people remained. How many were on the train originally?
Isabella has the four different number cards shown. She combines two cards to form a two-digit prime number. At most how many different prime numbers can she form?
Liam finds half a pizza in the fridge. He wants to cut from its centre to eat two fifths of this half and leave the rest for his brother. What angle should his piece have?
Mr Jimmy has 120 litres of red paint and 75 litres of blue paint. He fills each kind into full buckets of equal volume. If the bucket volume is as large as possible, how many buckets does he need?
Hellen can spend all her money on 6 bottles of milk and 7 loaves of bread, or on 8 bottles of milk and 4 loaves of bread. If she buys only bread, at most how many loaves can she buy?
The pie chart divides a class into excellent, good, fair and poor performance levels. Excellent students outnumber poor students by 18. How many good students are there?
It is 8:30 a.m. on a standard clock. Jane’s clock gains 4 minutes every true hour. What will it show when the correct time is 2:30 p.m. the next day?
Necessary intended convention: Jane’s clock is also set correctly to 8:30 a.m. at the start; the source does not explicitly state this synchronization.
Kylie draws five identical circles touching as shown. Joining the centres of the four outer circles forms a square of area 32 cm². Find the shaded area, using π = 3.14.
Morgan cycles from home to a party. At 10 km/h he would arrive 30 minutes late; at 18 km/h he would arrive 10 minutes early. What speed gets him there on time?
Intended comparison made explicit: the route and departure time are the same in both cases.