Test 3. Direct proportion

 1. 7 bags of sugar weigh 5495 g. How much do 3 bags of sugar weigh?

 а)  2405 g;      b)  2355 g;     

 c)  2315 g;      d)  2330 g.

 2. 5 rulers cost £1.5. What do 2 rulers cost?

 а)  90p;      b)  60p;     

 c)  45p;      d)  50p.

3. 5 oranges cost 75p. What do 6 oranges cost?

 а)  55p;      b)  105p;     

 c)  85p;      d)  90p.

 4. 8 bananas cost 64p. What do 5 bananas cost?

 а)  40p;      b)  34p;     

 c)  48p;      d)  42p.

 5. 9 apples cost 54p. What do 7 apples cost?

 а)  38p;      b)  42p;     

 c)  47p;      d)  45p.

 6. 3 calculators cost £15. How much 5 calculators cost?

 а)  £25;      b)  £35;     

 c)  £20;      d)  £45.

 7. This recipe for macaroni cheese server 6 people.

How much of each ingredient is needed to serve 18 people?

 а)  450 g cheese,  750 g flour,  750 g margarine,  3 onion,  9 eggs,  90 g butter,  9 table spoons water;     

 b) 450 g cheese,  900 g flour,  750 g margarine,  3 onion,  9 eggs,  90 g butter,  9 table spoons water;                                                        c)  450 g cheese,  900 g flour,  750 g margarine,  5 onion,  9 eggs,  90 g butter,  9 table spoons water;     

 d)  450 g cheese,  900 g flour,  750 g margarine,  3 onion,  9 eggs,  90 g butter,  6 table spoons water.

 8. This recipe for chocolate sponge server 8 people.

How much of each ingredient is needed for 12 people?

 а)  220 g butter,  330 g sugar,  3 table spoons water,  6 eggs,  330 g floor,  3  table spoons cocoa;     

 b)  330 g butter,  330 g sugar,  3 table spoons water,  6 eggs,  330 g floor,  3  table spoons cocoa;    

 c)  330 g butter,  220 g sugar,  3 table spoons water,  6 eggs,  330 g floor,  3  table spoons cocoa;    

 d)  330 g butter,  330 g sugar,  3 table spoons water,  9 eggs,  330 g floor,  3  table spoons cocoa.

 9. This recipe for pancakes server 4 people.

How much of each ingredient is needed for 6 people?

 а)  180 g plain flour,  360 ml milk,  3 eggs;     

 b)  180 g plain flour,  420 ml milk,  3 eggs;     

 c)  180 g plain flour,  420 ml milk,  5 eggs;     

 d)  240 g plain flour,  420 ml milk,  3 eggs.

10. This recipe for pizza server 5 people.

How much of each ingredient is needed for 9 people?

 а)  450 g cheese,  324 g dough,  270 ml tomato sauce,  45 g pepperoni;      

 b)  600 g cheese,  324 g dough,  270 ml tomato sauce,  45 g pepperoni;     

 c)  450 g cheese,  324 g dough,  180 ml tomato sauce,  45 g pepperoni;     

 d)  450 g cheese,  324 g dough,  270 ml tomato sauce,  75 g pepperoni.

For the rest of the exercise you may use a calculator if needed.

11. Find the cost of 3 cakes if 9 cakes cost £15.30.

 а)  £4.90;      b)  £5.10;     

 c)  £5.45;      d)  £5.25.

12. 3 boxes weigh 14.1 kg. Find the weight of 13 boxes.  

 а)  63.15 kg;      b)  61.10 kg;     

 c)  60.50 kg;      d)  62.30 kg.