It's 88 Keys on a Grand Piano
If P varies directly with q, r and s then P = kqrs, where k is a constant. As 70 = k x 7 x 5 x 4 = 140k : k = 70/140 = 1/2 The equation of joint variation is P = ½qrs.
If P varies jointly as q, r and s - assume this is in direct proportion, then P ∝ qrs so P = kqrs where k is a constant.70 = k x 7 x 5 x 4 = 140k : k = 140/70 = 0.5When q = 2, r = 15 and s = 7 then,P = 0.5 x 2 x 15 x 7 = 105
1 times 88 equals 88.
I
88 piano keys
88 keys on a piano.
88 Keys on a piano keyboard.
88 keys on a piano
Try 88 piano keys!!
88 Keys On A Piano
88 keys on a piano.
Something
There are 88 piano keys on a piano.
Piano Keys
What is 88 Piano Keys on a Key Board
88 Keys on a Piano