let the number of white marbles in the first jar be x
then the number of red marbles in the first jar is 7x
total in jar 1 is 8x
let the number of white marbles in jar 2 be y
then the number of red marbles in jar 2 is 9y
total in jar 2 is 10y
but 8x = 10y
x = (5/4)y
also 8x + 10y = 90
8(5/4)y + 10y = 90
10y + 10y = 90
y = 4.5
but both x and y must be whole numbers,
Your question is flawed.
to identical jars are filled with equal amount of marbles. the marbles are coloured red or white. the ratio of red to white marblesis 7:1 in jar 1 and 9:1 in jar 2 if there are 90 marbles altogether, determin the number of red marbles in jar 2.
2 answers
sorry the total of white marbles is 90