Which of the following is the compound ratio of 3:4 and 4:5?

If the ratio 3:20 is expressed into percentage, which of the following is correct?

Yousuf has obtained 70% of marks. What marks has Yousuf obtained if the total marks of examination are 700?

What is the price of 5 kgs of rice if the price of 8 kgs of rice is Tk. 168?

In the ratio 1:5
(i) The antecedent is 1
(ii) The subsequent is 5
(iii) The inverse ratio is 5:1
Which is the correct answer?

Of 100 boys and girls, if 60% is girls
(i) The number of girls = 60
(ii) The number of boys = 40
(iii) The ratio of boys and girls = 3:2
Which is the correct answer?

1% of 200 centimetre is –

What is ratio?

Which is the equivalent ratio of 2:5 of the followings?

2 men or 3 boys can finish a piece of work. 2 men, upon completing the work, got Tk. 900. What amount of money would each boy get if 3 boys would do the work?