Susan 5

Susan has a water tank in her back garden that can hold up to 750 L of water. At the start of a rainy day (at 0:00) there are 165 L in the tank, and after a heavy day's rain (at 24:00) there are 201 L in the tank.

Assuming that the rain fell at a constant rate during the 24-hour period, set up a linear equation to represent the amount of water in the tank at any point during the day, and determine the time at which the amount of water in the tank reached 192 L.

Result

t3 = 18:00 h Wrong answer

Step-by-step explanation:

t0=0 V1=165 l t2=24.00 V2=201 l  V3=192 l  V(t) = a t+b V(0) = a 0+b  b=V1=165 l  V2=a t2+b 201=a 24+165  24a=36  a=2436=1.5  a=23=1.5  V3= a t3+b  t3=aV3b=1.5192165=18=18:00 h



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You need to know the following knowledge to solve this word math problem:

geometryalgebrabasic operations and conceptsUnits of physical quantities

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