Cost of 4 mangoes = Rs. 6
Cost of 1 mango = Rs. 6/4 = Rs. 1.5
Now, Selling Price of 4 mangoes = Rs. 4
Selling Price of 1 mango = Rs. 4/4 = Rs. 1.0
Hence, the shopkeeper incurs a loss.
Required loss% = loss/C.P x 100
Loss = 1.5 - 1 = 0.5
C.P = 1.5
Loss% = (0.5/1.5) x 100
= (5/15) x 100
= 1/3 x 100
= 100/3
= 33.333%.
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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