Atank can hold 50 liters of water. at present, it is only 30% full. how many liters of water shall i put in the tank, so that is it 50% full?

Calculate how many liters you need to be half full:

50 liters x 50% = 50 x 0.5 = 25 liters to be half filled.

Calculate how many liters are in the tank now:

50 x 0.30 = 15 liters

Now subtract to find how many more liters are needed:

25 - 15 = 10 more liters.

step-by-step explanation:

do you have a copy of the table?

first, we define the variables:

x: number of years after 1950

f (x): amount of vinyl sold.

then, with the variables defined, we have:

68594 vinyl records were sold in 1958 > f (8) = 68594

91299 vinyl records were sold in 1961 > f (11) = 91299

38720 vinyl records were sold in 1952 > f (2) = 38720

161743 vinyl records were sold in 1967 > f (17) = 161743

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step-by-step explanation: