Test 3. Sharing in a given ratio

 1. An orange paint is made by mixing red and yellow in the ratio 2:3. How much red and how much yellow must be used to make 80 litres of orange?

 а)  48 l red,  32 l yellow;     

 b)  44 l red,  36 l yellow;     

 c)  36 l red,  44 l yellow;     

 d)  32 l red,  48 l yellow.

 2. Sheila, Gill and Ron are given some money in the ratio 7:3:4. If Gill was given £72, what was the total amount of money given to all 3 people?

 а)  £336;      b)  £339;     

 c)  £328;      d)  £332.

 3. In a factory the ratio of men to women is 5:2. If there are 235 men, how many women are there?

 а)  98;      b)  86;     

 c)  94;      d)  92.

 4. A recipe is made from flour, butter and sugar in the ratio 6:3:2. How much flour and sugar is needed if 270 g of butter is used?

 а)  560 g flour, 160 g sugar;     

 b)  540 g flour, 180 g sugar;     

 c)  160 g flour, 560 g sugar;     

 d)  180 g flour, 540 g sugar.

 5. Purple paint is made from red and blue paint in the ratio 2:5. If 35 litres of blue are used, how much purple paint would be mixed in total?

 а)  47l;      b)  52l;     

 c)  49l;      d)  45l.

 6. The seven dwarves are given some money. If is shared between Dopey, Doc, Happy, Bashful, Grumpy, Sneezy and Sleepy in the ratio 8:9:4:3:10:7:12. If Grumpy gets £150, how much money do each of the seven dwarves get? What is the total amount of money?

 а)  Dopey £120, Doc £135, Happy £60, Bashful £45, Grumpy £150, Sneezy £105, Sleepy £180; total £120;     

 b)  Dopey £150, Doc £135, Happy £60, Bashful £45, Grumpy £120, Sneezy £105, Sleepy £180; total £120;     

 c)  Dopey £120, Doc £135, Happy £45, Bashful £60, Grumpy £150, Sneezy £105, Sleepy £180; total £120;     

 d)  Dopey £120, Doc £135, Happy £60, Bashful £105, Grumpy £150, Sneezy £45, Sleepy £180; total £120.

 7. Green paint is made from blue and yellow paint in the ratio 3:7. If 42 litres of yellow are used, how much blue paint must be used?

 а)  18 litres;      b)  22 litres;     

 c)  16 litres;      d)  24 litres.

 8. A bar of Fruit & Nut chocolate normally weighs 200 g. The ratio by weight of a special offer bar to a normal bar is 5:4. What is the weight of a special offer bar?

 а)  280 g;      b)  235 g;     

 c)  250 g;      d)  258 g.

 9. Lemon squash is diluted using squash and water in the ratio 1:8. If 72 ml of water is used, how much squash must be added?

 а)  11 ml;      b)  9 ml;     

 c)  7 ml;        d)  13 ml.

Gunpowder is made up potassium nitrate, sulphur and charcoal in the ratio 17:3:4.

10. If 9 kg of sulphur is used, how much potassium nitrate should be added?

 а)  51 kg;      b)  15 kg;     

 c)  21 kg;      d)  27 kg.

11. If 20 kg of charcoal is used, how much sulphur should be added?

 а)  51 kg;      b)  21 kg;     

 c)  15 kg;      d)  27 kg.

12. How much sulphur should be used to make 216 kg of gunpowder?

 а)  21 kg;      b)  27 kg;     

 c)  51 kg;      d)  15 kg.