the marks obtained by Ranu and son Where the first term examination were in the ratio of 10 is to 7 respectively the second term examination each of them Scored 20 marks more making ratio 5 is to 4 find the marks scored by them first term examination
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Answer:
ranu=10*25=250
son=7*25=175
Step-by-step explanation:
10:7-1st
10x+7x=5(x+20)+4(x+20)
17x=5x+100+4x+100
17x=9x+200
17x-9x=200
8x=200
x=25
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