Maria, Shanta and Farida had sweets in the ratio of 10 : 5 : 3. Maria gave Shanta and Farida a total of 68 sweets so that all of them had the same number of sweets. Find the total number of sweets the girls had.
10+5+3 = 18 18 divided by 3(number of girls)=6 Maria gave Shanta and Farida 4 parts 4 parts = 68 sweets 68 divided by 4 = 17 Each parts represents 17 sweets In total there are 15 parts so 17x15 = 255 sweets