A website Maths Puzzle Category

the cost of 1 pencil, 2 pens and 4 erasers is Rs. 22. Cost of 5 pencils, 4 pens and 2 erasers is Rs. 32. How much is the cost of 3 pencils, 3 pens and 3 erasers?

Read Solution (Total 1)

27 Rs.

If cost of a pencil=x, pen=y & eraser=z, then
x+2y+4z=22 ---(i)
5x+4y+2z=32 ---(ii)
Adding (i) & (ii), 6x+6y+6z=54, So 3x+3y+3z=27
8 years agoHelpfull: Yes(5) No(0)

A website Other Question

A thief steals half the total no of loaves of bread plus 1/2 loaf from a bakery. A
second thief steals half the remaining no of loaves plus 1/2 loaf and so on. After the 5th
thief has stolen there are no more loaves left in the
bakery. What was the total no of loaves did the bakery have at the beginning Eesha leaves her house in the morning to go school. Just as she is leaving her house, she looks at an analog clock reflected in the mirror and judges the time based on the reflection. There were on numbers on the clock, so she makes an error in reading the time since it was a mirror image. Eesha gets to school in 20 minutes and finds that the school clock has a time that is 2 hours and 30 minutes later than the time that she judged based on the mirror image of her clock at home.
What time was it when she got to school? [DCRU]
A. 02:50
B. 07:25
C. 11:55
D. 01:05