Answer:
let total no. of red marbles be x and blue marbles be y.
then according to first case
x + y =36
or,x=36 -y.....(i)
in case second
x/5 =y/4
or,x=5y/4......(ii)
then from equation i and ii, we get
36-y = 5y/4
or, (36-y)4 = 5y
or, 144 -4y =5y
or, 144 = 5y + 4y
or, 144 = 9y
or, 144/9 =y
or, y = 16
again x = 36 -y
here , y =16
so,
x= 36 -16
x= 20.
hence total no. of red marbles is 20 and blue marbles is 16 .
If Carls removes 1 blue marble from bag, there will be 15 marbles in the bag,
20÷5 is not equal to 15 ÷3 .
correct ratio of red and blue marbles is 20÷15=
4/3.
Answer:
It is the first one.
Step-by-step explanation:
Show you how to do what i can not see anything right now.
Answer:
x=29. Angle C= 93
Step-by-step explanation:
3(x+2)= 3x+6.
3x+6+52+35= 3x+93.
180-93=87.
87/3= 29. So that means x=29.
for proof you can do 3(29)+93 and you'll get 180.
For angle C; 3(29+2)= 3x31. 31x3= 93.
Angle C= 93 degrees.
26
thursday 138 (46 x 63 / 21 = 138)
friday 99 (33 x 63 / 21 = 99)
27.
100% - 80% = 20%
20% = 0.2
150 * 0.2 = 30
answer: 30 students chose math