exam Maths Puzzle Numerical Ability

To save money for a video game, you put one dollar in an envelope. Each day for 5 days you double the number of dollars in the envelope from the day before. How much have you saved after 5 days?

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exam Other Question

Translate the following problems into algebraic equations :

1) 42 is 40% of what number?

2) 15 is what percent of 3?

3) The sum of the page numbers on facing pages of a book is 157; what are the page numbers?
Write an equation for the line in point/slope form and slope/intercept form that passes through (1,4) and parallel to the line 2x-3y=6.