Answer:
her speed in still water = 11 km/hour
the speed of the current = 9 km/hour
Step-by-step explanation:
x = Ritu's speed of rowing.
y = the sites of the river water flowing
x + y = 20 km / 2 hours = 10 km / hour
x - y = 4 km / 2 hours = 2 km / hour
x = 2 + y
2 + y + y = 20
2y = 18
y = 9 km/hour
x = 2 + y = 2 + 9 = 11 km/hour
Answer:
$1680
Step-by-step explanation:
make use of the simple interest formula:
PRT/100
P is the principle ($8000)
R is the rate of interest (7%)
T is the time (3)
= 8000*7*3 / 100
<u>1680</u>
Answer:
-1, -2
Step-by-step explanation:
Since multiplication by 0 will result in 0, any value of x resulting in 0
(-1+1)(-1+2)=0
0x1=0
(-2+1)(-2+2)=0
-1x0=0