Rohan is 2 years elder than rohit. Five years ago , one third of his age was equal to three-sevenths of rohit's age. Clalculate
their present ages. pl tell with explanation
2 answers:
Answer:
I hope it will help you.
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Answer:
Step-by-step explanation:
- Let Rohan age = x
- Let Rohit age =y
x = y + 2
(1/3)* (x - 5 ) = (3/7)(y - 5) Multiply both sides by 3
(x - 5) = 9/7 (y -5) Multiply both sides by 7
7(x - 5) = 9(y - 5) Remove the brackets
7x - 35 = 9y - 45 Add 45 to both sides
7x + 10 = 9y
y = x - 2
7x + 10 = 9(x - 2)
7x + 10 = 9x - 18
7x +10 + 18 = 9x
28 = 2x
x = 14
y = 14 -2
y = 12
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I say it is A
I believe the 4th one
an=145+an-1 and a1=20
Answer:
B
Step-by-step explanation:
B
The only example I saw was example B
