The rotio of blue marbles to red marbles in a bag is 11: 9.if there are 99 blue marbles in the bag how many red marbles are there

81

Step-by-step explanation:

let the number of blue and red marbles be 11x and 9x res

pectively

then,

11x=99

x=99/11

x=9

so

no. of red marbles= 9x=9×9=81

answer:     true

step-by-step explanation:

94

step-by-step explanation:

average the numbers and use a variable to figure out the minimum to get a 90.

(79+94+91+92+x)/5=90

x = 94