A can finish a work in 18 days and B can do the same work in half the time taken by A. Then, working together, what part of the same work they can finish in a day ?

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There is 60% increase in an amount in 6 years at simple interest. What will be the compound interest of Tk. 12,000 after 3 years at the same rate?

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A bank offers 5% compound interest calculated on half-yearly basis. A customer deposits Tk. 1600 each on 1st January and 1st July of a year. At the end of the year, the amount he would have gained by way of interest is :

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The equation of the given curve is:

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Two numbers are respectively 20% and 50% mor than a third number. The ratio of the two numbers is :

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A system of equations is shown below:
x+l=6
x-m=5
x+p=4
x-q=3
what is the value of l+m+p+q?

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