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Q1) Ravi's father's age is 5 years more than 3 times Ravi's age. If the father's age is y years, then what is Ravi's age.
Q2) A rectangular box is of height h cm. Its length is 3 times its height and the breadth is 7 cm less than the length, breadth in terms of height.
Q3) 6a+5b when a=4 and b=-2
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