Mr Simpson’s trapezoidal land has bases 24 m and 30 m. He extends both bases to the right: the smaller by 5 m and the larger by 7 m. The new area is 36 m² greater. Find the original area.
A train travels at constant speed for the first 30 minutes, then for another 30 minutes at a speed 20 km/h faster. In the whole hour it travels 100 km. Find the first speed.
Alice cycles from home to a nearby park, returns towards home, stops to talk with a friend, later stops to buy food, then reaches home. The graph shows distance from home. Her average speed over the entire trip, including stops, is 6.25 km/h. How long is she stopped in total?
A square has side 4 cm. Four identical semicircles inside it form a four-petalled flower as shown. Which answer is closest to the flower’s area in cm²?
Rectangle ABCD has diagonal AC=10 cm and side BC=6 cm. EAB is a right isosceles triangle with hypotenuse AB, with E outside the rectangle as shown. Find the area of triangle AEC.
Alice’s chocolate bars all have different weights. The 24 lightest, given to Brett, weigh 45% of the total. The 13 heaviest, given to Cyan, weigh 26%. Derek gets the rest. How many bars does Derek receive?
Oliver chooses cards from the numbers 1 to 100 so that the product of all chosen numbers is not divisible by 12. What is the largest possible number of chosen cards?
Fermat, Math and Olympiad each play every other team exactly four times. A win earns 5 points, a draw 2 per team, and a loss 0. Their totals are 21,11,23 points respectively. How many games are draws?