
Hi, Please help to solve this question. Besides using Algebra, any other solutions?
Thank you.
Hi, Please help to solve this question. Besides using Algebra, any other solutions?
Thank you.
The extra 300 ribbons comes from the groups of 75 ribbons (greyed out boxes). There are 300/75 = 4 groups (of 25 pink, 50 blue in 2nd row). So total is 4 x (25 pink + 50 blue) + 800 pink = 1100 ribbons. No algebra! :-P CHECK: 4 x 50 blue = 200 blue. Top row has 200/25 = 8 groups (of 50 pink, 25 blue). Total in top row: 8 x (50 pink + 25 blue) + 500 = 1100 ribbons.
For the blue ribbons sold in case 1 and case 2 (the blue ribbons are equal in both cases),
So 25(number of weeks sold) = 50 (number of weeks sold)
This means the number of weeks in case 1 is twice the number of weeks in case 2.
So let the number of weeks in case 2 be u, then number of weeks in case 1 = 2u
Pink ribbons in case 1 = pink ribbons in case 2 :
50(2u)+500 = 25u + 800
75u = 300 => u=4
So pink ribbons = 25(4) + 800 = 900
blue ribbons = 50(4) = 200
Total ribbons = 900+200 = 1100
Video Solution can be viewed Here