Question

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​

Answer 1

Answer:

70

Step-by-step explanation:

it is the correct answer

Answer 2

Answer:40:28.

Step-by-step explanation:

Let the marks of ranu and son are 10∆,7∆ respectively.In next exam their marks will be 10∆+20,7∆+20and new ratio is 5:4.therfore (10∆+20)/(7∆+20)=5/4.on equating ∆=4.their marks in first exam is 40:28.