exam Maths Puzzle Numerical Ability

my ques is
EACH SIDE OF TRIANGLE IS INCREASED BY 10CM. IF THE RATIO OF THE PERIMETER OF NEW TRIANGLE IS 5:4 FIND THE PERIMETER OF THE GIVEN RECTANGLE

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exam Other Question

what is the fahrenheit temperature that corresponds to each of the following celsius temperatures: -10, 0, 15, 100 by using this formula F=9/5c+32. For the following function, C computes the cost in millions of dollars of implementing a city recycling project when x percent of the citizens participate.
C(x)= 1.4x/(100 - x)