Answer:The LCM of 10, 15, and 20 is 60. After 60 minutes, they ring together again.
Step-by-step explanation:
Answer:
Step-by-step explanation:
7/3 * 2/3
14/3 * 1/3
Answer:
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Step-by-step explanation:
Answer: 1. You have to multiply 9.75x1.2= 11.7
2.You have to multiply 24.5x0.8= 20.4
3. Add the to products 11.7+20.4= 32.1
4. Answer is- 31.3 minutes
Step-by-step explanation: Hopefully this helped a lot ;D
Answer:

Step-by-step explanation:
PL^2 =7^2 +3^2
PL^2=49+9
PL=
