Wipro Company Numerical Ability Ratio and Proportion

A bag contains 50 cents, 20 cents and 10 cents coins in the ratio 5:3:1. If the total amount in the bag is $640, find the total number of coins in the bag.
A. 3600
B. 1800
C. 900
D. 2700
E. 4500

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Wipro Other Question

The sum of the 5 times first number and two times the second number is equal to twice the difference of thrice of the first number and twice the second. Find the ratio of the two numbers.
A. 6:1
B. 2:11
C. 1:6
D. either “B” or “C”
E. None
The ratio of science and arts students in a college is 8:5. If 18 science students shift to arts the ratio becomes 1:1. Find the total number of science and arts students in the college
A. 140
B. 130
C. 180
D. 156
E. 160