Question (7/75)
In what ratio must a grocer mix two varieties of pulses costing INR 15 and INR 20 per kg respectively so as to get mixture worth INR 16.50 per kg ?(A) 3 : 7
(B) 5 : 7
(C) 7 : 3
(D) 7 : 5
Question (8/75)
If 7 spiders make 7 webs in 7 days, then 1 spider will make 1 web in how many days ?(A) 1
(B) 7
(C) 14
(D) 28