### Class VII

Scale of map is 4cm : 1km, simplest possible ratio is
1. 1cm : 250m
2. 3cm : 560m
3. 2cm : 340m
4. 4cm : 120m
If 40% of a number is equal to two-third of another number, what is the ratio of first number to the second number?
1. 2 : 5
2. 3 : 7
3. 5 : 3
4. 7 : 3
The average weight of A, B and C is 45 kg. If the average weight of A and B be 40 kg and that of B and C be 43 kg, then the weight of B is :
1. 17 kg
2. 20 kg
3. 26 kg
4. 31 kg
The ratio of the number of boys and girls in a college is 7 : 8. If the percentage increase in the number of boys and girls be 20% and 10% respectively, what will be the new ratio?
1. 8 : 9
2. 17 : 18
3. 21 : 22
4. Cannot be determined
A car owner buys petrol at Rs.7.50, Rs. 8 and Rs. 8.50 per litre for three successive years. What approximately is the average cost per litre of petrol if he spends Rs. 4000 each year?
1. . Rs. 7.98
2. Rs. 8
3. . Rs. 8.50
4. Rs. 9
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