9.
Ratio of share of profit for A, B, C and D is given by
A
:
B
:
C
:
D = (15 × 4)
:
(12 × 2)
:
(18 × 6)
:
(16 × 5)
= 60
:
24
:
108
:
80 = 15
:
6
:
27
:
20
⇒
A’s share of profit =
15
× 1020
68
= Rs. 225
Hence, option D is correct.
10.
A’s age = 9x, B’s age = 10x
After 8 years,
9x + 8 : 10x + 8 = 11 : 12
12 (9x + 8) : 11 (10x + 8)
108x +96 = 110x + 88
110x – 108x = 96 – 88
2x = 8
x = 4
A’s present age = 4 × 9 = 36
Hence, option D is correct.
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