Others Maths Puzzle

Two clocks were correct at midnight but then one began to gain four minutes every hour. It stopped one and a half hours ago showing 4:48 pm. The clocks run for less than 24 hours.

What time will the other clock be showing ?

Read Solution (Total 3)

5.15 PM

After x hrs , time shown will be x+4x/60 = x+x/15

as per given condition
16x/15 = 16+48/60 = 16+4/5 = 84/5
x= 84*3/16 =63/4 hrs = 15 hrs 45 min or 3:45 PM

so present time = 3:45 PM + 1hr 30 min = 5 :15 PM
12 years agoHelpfull: Yes(5) No(0)

let us say that clock A is correct and clock B is gaining the time.
At midnight (12:00A.M) both are correct. clock B is gaining 4min every hour and stopped showing 4:48pm i.e,(16:48). Now, for 16 hours it gains 64min(1hr 04min)
and for 48 min it gains 3min 20sec. so total time it gained in extra is 1hr7min.
so the correct time is (4:48-1:07) i.e, 3:41PM. And, since it stopped 1hr 30min ago, the time clock A(correct time) showing is (3:41+1:30) i.e, 5:11 P.M.
12 years agoHelpfull: Yes(3) No(3)
It would be 5.15 P.M.
12 years agoHelpfull: Yes(2) No(3)

Others Other Question

At a musical recital five students (John, Kate, Larry, Mary and Nick) performed five musical pieces. Two by Bach, two by Mozart and one by Vivaldi. There were three violinists and two pianists. Each student performed only one piece, and played only one instrument. Find the order of the students, their respective instruments and the composer, with the following conditions:

1. The composers were not played consecutively. Vivaldi was played last and Mozart was played first.

2. There was one piano piece that was played between two violin pieces, and two violin pieces between the first and last piano piece.

3. There were no piano pieces by Mozart.

4. Kate played third.

5. John played a piece by Mozart, and was immediately followed by Nick, who played the piano.

6. Mary did not play a piece by Vivaldi. Q1-3)Read the following statements carefully to answer these questions:

Statements:

1. Mohan and Ram play hockey and football.
2. Edward and Ram play football and cricket.
3. Mohan and Rafiq play tennis and hockey.
4. Refiq and Edward play cricket and tennis

1. Name of the who plays hockey, football and tennis.
(1) Edward (2) Ram (3) Mohan (4) Rafiq

2. Name the boys who plays hockey, football and cricket.
(1) Ram (2) Mohan (3) Rafiq (4) Edward

3. Name of the boy who plays hockey, cricket and tennis.
(1) Mohan (2) Ram
(3) Rafiq (4) Edward