Pick up a few math problems in junior high school of grade two and grade seven! ! ! ! ! ! Gao shoujin - Training Enrollment Network

Pick up a few math problems in junior high school of grade two and grade seven! ! ! ! ! ! Gao shoujin

Let the burning time be x and the length of fuse lock be 0.02x, then

4x-0.02 x & gt； 10

3.98 times & gt 10

x & gt 10/3.98

So l =1/50 *10/3.98 =1/5 * 3.98 = 0.05m.

Look at the instructions of the calculator.

Ha, I wish you better and better in your studies.

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