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Expression Formation

Geetha solves...

Question

Geetha solves of 30 mathematical problems. How many problems has she not solved?

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Solution

Number of problems not solved by Geetha

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Jaya has a certain number of word problems with her. She can solve some fixed number of problems every hour. After solving for 6 hours, she is left with 384 problems. If she solves for 12 hours, she will be left with 144 problems. Find the total number of word problems Jaya has to solve.

Tori's mathematics test had 75 problems: 10 arithmetic, 30 algebra, and 35 geometry problems. Although she answered 70% of the arithmetic, 40% of the algebra, and 60% of the geometry problems correctly, she did not pass the test because she got less than 60% of the problems right. How many more problems would she have needed to answer correctly to earn a 60% passing grade?

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Q. How to increase possibly to solve any mathematical equation or numerical problem.? I can solve if any mathematical numerical problem came whether it's maths or physic. Can I have some tips please ?

Q. A computer solved several problems in succession. The time it took the computer to solve each successive problem was the same number of times smaller than the time it took it to solve the preceding problem. How many problems were suggested to the computer if it spent 63.5 mm to solve all the problems except for the first, 127 mm to solve all the problems except for the last one, and 31.5 mm to solve all the problems except for the first two?

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