Question

Joseph and Peter can complete a work in 20 hours and 25 hours respectively find the work done by both of them in 4 hours

Answer 1

RATE OF WORK OF JOSEPH = 1/20 WORK/ HR

RATE OF WORK OF PETER = 1/25 WORK/HR

COBINED RATE OF WORK = 1/20 +1/25 = 9/100 WORK/HR

IF, IN 1 HOUR JOSEPH CAN DO 1/20 WORK,

∴4 HOUR = ?

=4 × 1/20 ÷1 =1/5

IF, IN 1 HOUR PETER CAN DO 1/25 WORK,

∴4 HOUR = ?

=4 × 1/25 ÷1 =4/25

∴COMBINED FRATE OF WORK IN 4 HOUR = 1/5 +4/25

= 9/25 WORK / 4HR

Answer 2

Answer:

please elaborate your question