3900 bulbs were used to decorate a building. 25% of them were green, 15% were red and the rest yellow. Find the no. Of yellow bulbs
Answers
Step-by-step explanation:
percentage of green bulbs= 25% of 3900
number of green bulbs= 25÷100×3900
= 25×39
= 975
percentage of red bulbs= 15% of 3900
= 15÷100×3900
=15×39
=585
total number of green and red bulbs= 975+585
=1560
total number of bulbs= 3900
total number of green and red bulbs= 1560
number of yellow bulbs= 3900-1560
=2340
hence the number of yellow bulbs are 2340.
hope it help.
Answer:
2340
Step-by-step explanation:
total no of bulbs used to decorate a building =3900
percentage of green bulbs =25%
therefore, number of green bulbs = 25/100 ×3900 = 25×39 = 975 bulbs
percentage of red bulbs =15%
Therefore, no of red bulbs = 15/100 × 3900 = 15×39 = 685
Therefore, total no of green and red bulbs = 975+585 = 1560
Therefore, total no of yellow bulbs = 3900-1560 = 2340 is the correct answer