Henry runs around a park 5 times and covers a distance of 8.25 km. The next day he runs 6.6 km more than the previous day. How many rounds of the park did Henry take on the second day?
Jackson gets a salary of £27500 every month and he sends £3300 out of that to his parents. The ratio of the money he sends to his parents to the amount he is left with is:
Joseph is decorating a 21 cm × 9 cm rectangular sheet. He wants to cover its boundary with matchsticks. If each matchstick has a length of 1 cm, find the number of matchsticks required to cover the boundary.