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Understanding
o Ker Jin and Asyraff share 42 sweets in the ratio 3 :4.
Who gets more sweets, Ker Jin or Asyraff?
e Lily and Chloe share some money in the ratio 1 : 3.
What fraction of the money does each girl receive?
e Divide the following quantities in the given ratios,
a) $85 in the ratio 2:3 b) $50 in the ratio 4 :1 c) $210 in the ratio 5 : 2
d) 72 kg in the ratio 2:7 e) 42 sweets in the ratio 6 :1 f) 52 plants in the ratio 4: 9
g) $99 in the ratio 10:1 h) $400 in the ratio 3 : 7 i) $24 in the ratio 3 : 2
O Ang grows orchids as a hobby. The ratio of the number of pink orchids to the number of white orchids
that he has in his greenhouse is 4 : 1. How many pink orchids and white orchids doe he have if he has
225 orchids in total?
© In a packet of red and blue sweets, the ratio of the number of red sweets to the number of blue
sweets is 5 : 3. 75 of the sweets in the packet are red. How many blue sweets are there in the packet?
© Iris and Andrew want to share 2 ^ of milk in the ratio 7 : 3.
How many millilitres of milk does each of them receive?
O Ryan and Benjamin share a sum of money in the ratio 3 : 5. Benjamin receives $320 more than Ryan.
a) How much money does each boy receive?
b) How much money do they have altogether?
@* Challenge! The ratio of the number of cookies in Jar A to the number of cookies in Jar B is 3 : 8. Half
of the cookies in Jar A are transferred to Jar B. What is the new ratio of the number of cookies in Jar A
to the number of cookies in Jar B in the end?
©* Challenge! The ratio of the number of blue discs to the number of red discs in a box is 2 : 1. Ice puts
another 25 red discs into the box and the new ratio of the number of blue discs to the number of red
discs becomes 4 : 7. How many red discs are there in the box in the end?
UNIT 13 Ratio, Rate and Proportion

