So, ratio of times taken = 1 : 2.
B's 1 day's work = | 1 | . |
12 |
∴ A's 1 day's work = | 1 | ; (2 times of B's work) |
6 |
(A + B)'s 1 day's work = | ❨ | 1 | + | 1 | ❩ | = | 3 | = | 1 | . |
6 | 12 | 12 | 4 |
So, A and B together can finish the work in 4 days.
The shaded region represents
y ? x
Let 45 x A = (25 x 900)/100
? A = (25 x 9)/45 = 5
CP = [100/(100 - Loss%) ] x SP
CP = 6000 x (100/75) = 8000
NA
Angle swept in 30 min= 180°
Area swept = [(22/7) x 7 x 7] x [180°/360°] cm2
= 77 cm2
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