Level 1 PSLE The ratio of the number of vests to that of skirts in a shopping centre was 3 : 2 at first. After 30 skirts were sold, the ratio of the number of vests to that of skirts became 4 : 1. What was the total number of vests and skirts in the shopping centre at first?
Level 2
A box contains some red, yellow and blue sweets. The ratio of the number of red sweets to the number of yellow sweets is 2 : 3. The ratio of the number of yellow sweets to the number of blue sweets is also 2 : 3. What is the ratio of the number of red sweets to the number of blue sweets in the box?
Level 2
Julia collected twice as many stamps as Clare. Clare collected twice as many stamps as Simran. What is the ratio of the number of stamps collected by Julia to the number of stamps collected by Simran?