self Maths Puzzle

The length of the longest tape in cm which can be used to measure exactly, the length 7m; 3m 85cm; and 12m 95cm is:

(A) 37

(B) 35

Read Solution (Total 3)

Ans. is (B) 35.
The three lengths in cm are 700, 385 & 1295.
HCF of 700, 385 & 1295 is 35.
Hence, the answer is 35 cm.
11 years agoHelpfull: Yes(4) No(2)

sorry hcf of 700,385,1295 is 35
so ans is 35

first i post wrong
11 years agoHelpfull: Yes(2) No(2)
hcf of 700,300,850 and 1295 is 35
The length of the longest tape is 35 cm(ans)
11 years agoHelpfull: Yes(1) No(2)

self Other Question

A discount of 20% on one article is the same as a discount of 25% on another article. The cost prices of two articles respectively can be (in Rs):

(A) 1000, 800

(B) 600, 800
if A fills a tank in 30mins,and B fills the same tank in 20mins,and C emptys it in 40min ,if A,B,C works together how much time will the tank take to fill?