A) Three trucks transport 200m³ of sand. To transport 1600m³ of sand, how many trucks would it take? b) The food left for 3 castaways would be enough to feed them for 12 days. One of them decided to jump and try to land ashore swimming. With one less castaway, how long will the food be?

Watermelon in the sun Difficulty Level: A 1 kilogram watermelon has 1% solid and 99% liquid. After being in the sun, she dehydrated and got 98% liquid. How much does she weigh after sunbathing? Challenge 159 Little John Waiting for Bus Challenge Index Next >> Challenge 161 As Many As Possible

Rule of Three Simple Rule of Three Composite Rule of Three Periodic Tithes Periodic Tithes Generator of a Periodic Tithing Percentage Percentage and Percentage Ratio Multiplication Factor Plane Geometry Areas of Flat Figures Polygons Surface Measurements Introduction, Surface and Area, Square Transformation Measurements Volume Introduction, Cubic Meter Unit Transformation Capacity Measurements Introduction, Capacity, and Liter Unit Transformation Continues After Advertising Mass Measurements Introduction, Kilogram Reading Mass Measurements Unit Transformation Time Measurements Introduction, Second, Multiples of Second Other Units Measurement Length Measurement Decimal Metric, Meter Reading Length Measurement Transforming Units Polygon Perimeter Circumference Length 2nd Degree Equations What is a 2nd Degree Equation?

Consider a quadratic function y = f (x) = ax 2 + bx + c. Let's determine the values of x for which y is negative and the values of x for which y is positive. According to the sign of the discriminant = b 2 - 4ac, the following cases may occur: 1st -> 0 In this case the quadratic function admits two distinct real zeros (x1 x2).

The rooms and lamps In the second room, we turn switch 1 on for 15 minutes, turn it off, and then turn switch 2 on and go to the first room. The light that is on corresponds to switch 2, the one that is hot to switch 1, and the remaining lamp can only be from switch 3.

Adroaldson's Wallet Level of difficulty: Adroaldson lost his wallet and went to the police station to report the incident. Arriving there, a police officer told him that a wallet was found and asked Adroaldson to report the contents of his wallet. Adroaldson said he had $ 63.00 in six notes and none of them was $ 1.00.