2) At your usual speed, a man goes down a river of 15 km of measure in 5 hours less than the time that he spends swimming in the same river wandering the opposite way. If he doubles his usual speed, he will go down a river spending only 1 hour less than the time spent in the return. Considering that the speed of the flow of the river keeps constant during the path which is your value in km/h? How you can make this exercise more challenging?

try my work outs every day

Step-by-step explanation:

to find the unit price, we must figure out the cost of one item (in this case one dish towel).   to do this, we divide the total price ($7.92) by the number of items bought (for this problem it is 8, because there are eight dish towels in one pack).  

$7.92/8 = $0.99

therefore, the unit price, or the price of one dish towel, is $0.99.

hope this !

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)