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The average amount of water in 4 similar tanks is k litres.
(a) Express the total amount of water in the tanks in terms of 
k.
(b) If k=15, find the total amount of water in the 4 tanks.

The average amount of water in 44 similar tanks is k k litres.\newline(a) Express the total amount of water in the tanks in terms of k k .\newline(b) If k=15 k=15 , find the total amount of water in the 44 tanks.

Full solution

Q. The average amount of water in 44 similar tanks is k k litres.\newline(a) Express the total amount of water in the tanks in terms of k k .\newline(b) If k=15 k=15 , find the total amount of water in the 44 tanks.
  1. Denote total water as T: Let's denote the total amount of water in the 44 tanks as TT. Since the average amount of water in each tank is kk liters, we can express TT in terms of kk.T=4×kT = 4 \times k
  2. Substitute kk with 1515: Now, we substitute kk with 1515 to find the total amount of water in the 44 tanks.\newlineT=4×15T = 4 \times 15
  3. Perform multiplication: Perform the multiplication to find the total amount of water. T=60T = 60

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