Solve the Three Math Problems

Algebra
Tutor: None Selected Time limit: 1 Day

1. 7*2^2-5/8=

2. Find the whole. 581 coffees is 12.3% of what number of coffees?

3. Supply the missing numbers. Round any decimal to the the nearest thousandth and percent to the nearest tenth of a percent . fraction decimal percent 3 2/3

Sep 5th, 2014

1)  7*2^2 - 5/8 = 7*4 - 5/8

= 28 - 5/8

= [28*8 - 5 ] /8 , lcm

= (224 - 5) / 8 = 219/8

= 27 3/8

 2)  let number of coffees =x

  12.3% of x = 581

  (12.3/100)x = 581

 x = (581) (100) / 12.3

   = 4723.5

= 4724 coffees

3)  3 2/3 = (11/3)100 %

             = 1100/3 %

             = 366.667 %  

Sep 5th, 2014

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