Accenture Company Numerical Ability Area and Volume

If the radius of a cylinder is increased by 20%, by what percent does the curved surface area of the cylinder change?
1) 20 2) 40 3) 44 4) 400

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Accenture Other Question

In what ratio should a person mix two varieties of tea costing 30 Rs/ kg and 45 Rs/kg so that the mixture sold at 36 Rs/kg yields no loss or no profit.
1) 3:4 2) 2:1 3) 3:2 4) 4:3
The sum of three numbers in an arithmetic progression is 138. If the first number is 30, what is the product of first and the last numbers?
1) 1380 2) 1860 3) 2852 4) 1800