Mathematics and Science Quiz

Winan travels from home to the airport in 4 hours 40 minutes at an average speed of 60 km/h. Since Winan has to check in first, he must arrive 1 hour 20 minutes early. What is the average speed required in km/h?

A screen printer makes chest numbers on 251 shirts starting from number 1 to number 251. How many zeros does he make?

If 1 A 7 B 5 3 4 + 2 0 1 3, what is the value of A + B?

Juliana has a total of Rp.73,000.00 consisting of 2000 and 1000 denomination bills. If the total number of bills is 41, how much money does Juliana have in 2000 denomination bills?

What is the smallest angle formed by the two clock hands showing 04:15?

The preferences of students are as follows: basketball 20%, badminton 25%, soccer 45%, and table tennis 10%. If the total number of students is 120, how many students like soccer and badminton?

Mr. Hamid buys 6 chickens and 2 ducks. The price of 2 chickens is the same as the price of 3 ducks. If the price of chicken is Rp. 48,000 each, how much money does Mr. Hamid have to pay?

The math exam scores of four students are 79, 83, 92, and 80. Aurelia's score is 6 points higher than the average of the four students' scores and her own score. What is Aurelia's score?

A water tank is in the shape of a rectangular prism. The inner dimensions are 60 cm long, 50 cm wide, and 40 cm high. If the tank is filled with 10 liters of water every day, but it leaks 1 liter of water from the tank every day, on which day will the tank be full?

What is the value of 1/2 + 1/6 + 1/12 + 1/20 + 1/30?