Present age of father is 42 years and that of his son is 14 year. Find the ratio of present age of father to the present age of son.

(a)

42:28 (b) 84:14 (c) 3:1 (d) 45:17​

The width of a rectangle is 20 units. can the perimeter p of the rectangle be 64 units when its length x is 11 units? no, because p = 2x + 2(20) no, because p ≠ 2x + 2(20) yes, because p ≠ 2x + 2(20) yes, because p = 2x + 2(20)

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document

What multiplys to be 1 but adds up to be 4