Eight more than five times a number is that number increased by 40. Find the num

Question

Eight more than five times a number is that number increased by 40. Find the number. The bar graph shows the average number of years a person devotes to each of the most time-consuming activities. On average, a person devotes 36 years to sleeping and watching TV. The number of years sleeping will exceed the number of years watching TV by 14. Over a lifetime, how many years will a person spend on each of these activities? A minor league baseball team plays 97 games in a season. If the team won 16 more A rectangular athletic field is twice as long as it is wide. If the perimeter of the athletic field is 192 yards, what are its dimensions? The perimeter of a rectangle is 400 yards. What are the dimensions of the rectangle if the length is 60 yards more than the width? A bookcase is to be constructed as shown in the figure. The length is to be 2 times the height. If 33 feet of lumber is available for the entire unit, find the length and height of the bookcase.

Explanation / Answer

12. Perimeter of a rectangle= 2(l+b), l=length b= breadth

Here, it is given as l=2b . So perimeter = 2(2b+ b) = 192 yards

perimeter = 6b=192...............

Therefore, b=32 yards and l= 64 yards...........(Answer)

13.

Perimeter of a rectangle= 2(l+b), l=length b= breadth

Here, it is given as l=b+60 . So perimeter = 2(b+60+ b) = 1400 yards

perimeter = 4b+120=400...............4b=280

Therefore, b=70 yards and l= 130 yards...........(Answer)

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