The perimeter of a rectangle is 48m. If the width were doubled and the length were increased by 24m, the perimeter will be 112m. What are the length and width of the rectangle?

Step-by-step explanation:

2W + 2L = 48

   W + L = 24

         L = 24 - W

    2(2W) + 2(L + 24) = 112

          4W + 2L + 48 = 112

4W + 2(24 - W) + 48 = 112

 4W + 48 - 2W + 48 = 112

                           2W = 16

                              W = 8

      L = 24 - 8

      L = 16

if gloria has "carry over" minutes, (that is, any minutes paid for but not used in a month can be applied to her payment for minutes in the next month,) her total usage for the three months is: total minutes = 320 + 243 + 489 = 1052 minutes number of 200 minute blocks = 1052/200 = 5 r52 (that is 5 with a remainder of 52) rounding up the number of 200 minute blocks gives her usage for the three months as 6 blocks. the cost for six blocks is 6 x $25 = $150 she also has 200 - 52 or 148 carry over minutes if gloria pays each month and unused minutes are lost, applying the rounding up procedure to each month gives: first month usage of 320 minutes rounds up to 2 blocks of 200 minutes for a payment of 2 x $25 = $50 second month usage of 243 minutes rounds up to 2 blocks of 200 minutes for a payment of 2 x $25 = $50 third month usage of 489 minutes rounds up to 3 blocks of 200 minutes for a payment of 3 x $25 = $75 total payments for the three months are $50 + $50 + $75 = $175 get the plan with carry over minutes!