1 Melvin had $240 more than Ramesh at first. After Melvin spent $280 on a toy car, Ramesh had twice as much money as Melvin. Find the amount of money Melvin had at first.
2. Joshua had 45 more stickers than Melvin at first. After Melvin used 15 of his stickers, Joshua had thrice as many stickers as Melvin in the end. Find number of stickers Joshua has at first?
3. There were twice as many boys as girls at a party. After 9 girls left the party, there were thrice as many boys as girls who remained behind. How many boys were there at the party?
4. Aaron had twice as many stickers as Henry at first. After Henry had used up 15 stickers, Aaron had 4 times as many stickers as Henry. How many stickers did Aaron have?
5. Calvin had thrice as many sweets as Mike. If Mike gave away 12 sweets to his sister, Calvin would have 4 times as many sweet as Mike. How many sweets did Calvin have?
8. There were twice as many men as women at a concert. After 90 men had left the concert, the number of women in the concert was twice the number of men that remained. How many adults attended the concert?
9. Mary baked twice as many cookies as Linda at first. After Mary had given away 80 cookies to her Carol, Linda had thrice as many cookies as Mary. How many cookies did Mary bake at first?
10. Ben made thrice as many egg tarts as Suzy at first. After Ben made another 30 egg tarts, Ben had 5 times as many egg tarts as Suzy. How many egg tarts did Ben have at first?
11. There were thrice as many men as women at a party. After 45 men had left the party, there were twice as many women as men that remained behind. How many men were there at the party at first?
12. There were two groups of participants in a contest. There were 15 more participants in Group1 than in Group2. When 3 participants from Group 2 left the group, the number of participants in Group1 was twice the number of participants in Group 2. How many participants were there in Group 1 at first?
13. In an adult outdoor camp, the number of adults in Campsite A was 64 more than the number of adults in Camp site B. When 12 adults left Campsite B due to family emergencies, the number of adults in Campsite A was thrice that in Campsite B. Find the number of adults in Campsite A at first.
14. Janice had 48 more chocolates than Daniel at first. After Daniel ate 12 chocolates, Janice had four times as many chocolates as Daniel. How many chocolates did Janice have at first?
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