exam Maths Puzzle Numerical Ability

jack has $2.10 in nickles and quarter she has twice as many nickles as quater . how many of each does she have.

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exam Other Question

The difference of two numbers is 1. 1/7 the larger number less 1/9 the smaller number is 1. Find the numbers. Trisha is on vacation. She sends letters and postcards to her friends at home. she needs 33 cents in postage for each letter and 20 cents for each postcard. she spends $3.58 in postage. how many letters and postcards did she send?