৭৭৫১
In what ratio should a mixture of 20% alcohol strength be mixed with a mixture of 60% alcohol strength to get a mixture of 50% alcohol strength?
উত্তর
1 : 3
৭৭৫৪
The equation 2x 2 + kx + 8 = 0 has two equal roots, then the value of k is-
উত্তর
± 8
৭৭৫৫
In a mixture 60 litres, the ratio of milk and water 2 : 1. If this ratio is to be 1 : 2, then the quantity of water to be further added is-
উত্তর
60 litres
৭৭৫৯
What is the ratio of one-fourth of 9/20 and three-fourths of the same number?
উত্তর
1 : 3