Gina saw twice as many tigers as lions at the zoo. the number of bears she saw was 7 less than the number of tigers. she saw 5 times as many monkeys as bears. gina saw 25 monkeys. how many animals did gina saw at the zoo?

Question

Heaven

Mathematics

21 September, 02:22

Gina saw twice as many tigers as lions at the zoo. the number of bears she saw was 7 less than the number of tigers. she saw 5 times as many monkeys as bears. gina saw 25 monkeys. how many animals did gina saw at the zoo?

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Bubbles · Answer 1

Make a system of equations. The variable names are the first letter of the animal:

t = 2l

b = t-7

m = 5b

m = 25

Substitute the last equation into the third to get 5 bears. Keep substituting upwards, getting 12 tigers and 6 lions. Add all the numbers to get 25+5+12+6 = 48 total animals