A= 3R
R = A/3
24= A + R
24= 3R + R
24 = 4R
6= R
A= 18
Roman = 6
Alex = 18
6+18 = 24
The equation in terms of "t"
1/t = ¹/₂₁ + ¹/₁₅
On solving the equation "t"= 8 ³/₄ days
Step-by-step explanation:
Time taken by roofer to shingle a roof- 15 hours
Time taken by apprentice-21 hours
Time required to shingle if both worked together- “t” hours
If roofer shingles the roof in 15 hours
Part of the roof he would shingle in 1 hours= ¹/₁₅
Similarly, part of the roof shingled by apprentice in 1 hour- ¹/₂₁
Part of the roof shingles when they worked together for 1 hours- 1/t = ¹/₂₁ + ¹/₁₅
Total time taken= 1/t = ¹/₂₁ + ¹/₁₅
1/t= ⁽²¹⁺¹⁵⁾ /₃₁₅
t= 315/36 = 8 ³/₄ days
Answer: 4.2 kilograms
Step-by-step explanation:
9514 1404 393
Answer:
1
Step-by-step explanation:
![(5-6)^{76}=(-1)^{76}=((-1)^2)^{38}=1^{38}=\boxed{1}](https://tex.z-dn.net/?f=%285-6%29%5E%7B76%7D%3D%28-1%29%5E%7B76%7D%3D%28%28-1%29%5E2%29%5E%7B38%7D%3D1%5E%7B38%7D%3D%5Cboxed%7B1%7D)