1. Seats for Mathematics, Physics and Biology in a school are in the ratio 5 : 7 : 8. There is a proposal to increase these seats by 40%, 50% and 75% respectively. What will be the ratio of increased seats?
2 : 3 : 4
6 : 7 : 8
6 : 8 : 9
None of these
EXPLANATION
A
2. The fourth proportional to 5, 8, 15 is:
18
24
19
20
EXPLANATION
B
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