the combined score for yakubu in geography, economics and science is 194. he scored twice as many marks in economics as in geogr

Question

1 year ago

10

aphy and four more marks in science than economics. find his marks in each of the three subjects.

1 answer:

SVETLANKA909090 [29] · Answer 1 · 2024-01-12T14:31:18+03:00

The scores of geography, economics and science are 38, 76, 80 respectively.

Let Yakubu scored x marks in geography.

Given that the score of him in economics is twice of the score of him in geography.

So, his score in economics = 2x

Again it is given that, the score in science is 4 more than the score in economics.

So the score in science = 2x+4

According to question the combined total score is 194. So the suitable equation is,

x+2x+2x+4 = 194

Solving the equation we get,

5x+4 = 194

5x = 194-4

5x = 190

x = 190/5

x = 38

So the score in geography = 38

the score in economics = 2x = 2*38 = 76

the score in science = 2x+4 = 2*38+4 = 76+4 = 80

Hence the scores of geography, economics and science are 38, 76, 80 respectively.

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