Ms Betty has 24 girls and 30 boys in her class. She makes as many teams as possible, with equal numbers of girls across teams and equal numbers of boys across teams. How many boys are on each team?
Find the largest two-digit number with different digits such that each digit has an axis of reflection symmetry.
Intended shape convention: use standard idealized upright digit shapes. Exact symmetry depends on the typeface; the solution makes the intended shapes explicit.
A trapezoidal plot has parallel bases 24 m and 30 m. Both bases are extended to the right, by 5 m and 7 m respectively, making a new trapezoid 36 m² larger. Find the original area.
The pie chart gives the ages of a movie club’s members. For this problem, a screening of Doctor Strange 2 admits only members aged 20 or older, and 54 members qualify. How many members are in the club?
Percentage by age in a movie club = Tỉ lệ theo tuổi trong câu lạc bộ phim.
In month 1, Uncle Webber sells three fifths of his chickens and six more. In month 2, he sells five sevenths of those remaining and buys four chicks. He ends with 28 chickens. How many did he have originally?
Wesley joins three small cubes of side 6 cm to one large cube of side 15 cm as shown. He paints the whole outer surface, including the flat eye decoration. Find the painted area.
Tony folds a square sheet twice along the dashed lines, then cuts through every layer along the red lines. How many separate pieces result after unfolding?
Jack and Jane use five identical rectangles in total: two in Jack’s figure and three in Jane’s figure. Their figure perimeters are 48 cm and 68 cm respectively. Find the perimeter of one small rectangle.