Page 21 - CITS - WCS - Mechanical

WORKSHOP CALCULATION - CITS

Profit = SP-CP = 15000-13043.47 = 1956.53
Purchase price = Rs.13,043/,Profit = Rs. 1957
Example 3
Out of 80000 cars, which were tested on road, only 16000 cars had no fault. What is the percentage in this
acceptance.

160000 100
= × 100 = = 20%
80000 5

Example 4 100 1800000
Original Price = 18000 × =
The price of a motor cycle dropped to 92% of original price and now sold at Rs.18000/- What was the original
price. 92 92

Solution
litres
100
90)
×
(100 −
=
Present price of Motor cycle Rs.18000
100
160000
100
=
×
100 =
20%
=
This is the value of 92% of original price
5
80000
10
= × 100
100 100 1800000
Original Price = 18000 × =
92 92
= Rs. 19565
100
160000 litres

100 =
= = (100 − 90) = × 20%
×
100
Example 5 100
80000
5
A Motor vehicle uses 100 litres of Petrol per day when travelling at 30 kmph. After top overhauling the consumption

10
falls to 90 litres per day. Calculate percentage of saving.
1800000
100
100
=
×
Original Price = 18000 × =
Solution 100 92 92
Percentage of saving = Decrease in consumption/Original consumption x 100
litres
= (100 − 90) × 100
100
10
= × 100
100
= 10 % Saving in fuel.
Assignment
1 a = 400mm (side of square)
d = 400 mm
Wastage = ______ %.

8

CITS : WCS - Mechanical - Exercise 3