
Plz help. No algebra needed.
Plz help. No algebra needed.
Number of blue crayons at the end = 352/2 = 176
Number of blue crayons originally = 176/0.8 = 220
Number of yellow crayons at the end = 176
Number of yellow crayons originally = 176/0.88 = 200
Number of blue + yellow crayons originally = 220 + 200 = 420 (3/5 of the total crayons)
(a) Number of red crayons = 420/3 x2 = 280
(b) total number of crayons = 420/3 x5=700
(a) Red Blue Yellow
At first 2u 3u
Thrown away 20% 12%
Remaining 2u 80% 88%
Remaining blue and yellow are equal and total = 352
=> Blue = 176 and Yellow = 176
80% Blue —> 176 => 100% Blue = (176/80) x 100 = 220
88% Yellow —> 176 => 100% Yellow = (176/88) x 100 = 200
Total Blue and Yellow = 220 + 200 = 420
3u –> 420 => 2u = (420/3) x 2 = 280
Hence Red crayons is 280
(b) Total crayons at first = 280+420 =700