24 = 4*6 = 2*2 * 2 *3
40 = 4*10 = 2*2 *2 *5
least common multiple is 2*2*2*3*5
120
The answer that I got when doing the calculations is A=70.
Answer: 
Step-by-step explanation:
We will subtract the amount of water that leaked out from the amount of water originally in the fish tank.
The fish tank is of the way full.
The equation that represents the total number of stamps malik collected is x + y = 212. The equation that represents the difference in the number of foreign and domestic stamps malik collected is: x - y = 34. This is the system of two equations. Malik has a total of 212 stamps: x + y = 212. He has 34 more domestic stamps (x) than foreign stamps (y): x = y + 34. If we rearrange it, we have x - y = 34. So, this is the system of two equations: x + y = 212 and x - y = 34.<span>
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